Publications
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Oh, H; Knigge, R; Hardin, A; Sherwood, R; Duren, D; Valathan, M; Leary, E; McNulty, K
Predicting Adult Facial Type From Mandibular Landmark Data At Young Ages. Journal Article
In: Orthod Craniofac Res, vol. 1, pp. 154-162, 2019.
@article{Oh2019,
title = {Predicting Adult Facial Type From Mandibular Landmark Data At Young Ages.},
author = {H Oh and R Knigge and A Hardin and R Sherwood and D Duren and M Valathan and E Leary and K McNulty},
url = {https://pubmed.ncbi.nlm.nih.gov/31074133/},
doi = {10.1111/ocr.12296.},
year = {2019},
date = {2019-05-22},
urldate = {2019-05-22},
journal = {Orthod Craniofac Res},
volume = {1},
pages = {154-162},
abstract = {To assess the potential of predicting adult facial types at different stages of mandibular development.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
To assess the potential of predicting adult facial types at different stages of mandibular development.
L, Michoud; C, Huang; M, Yatabe; J, Bianchi; et al,
A web-based system for statistical shape analysis in temporomandibular joint osteoarthritis. Journal Article
In: Proc SPIE-the Int Soc Opt Eng, vol. 10953, 2019.
@article{Michoud2019,
title = {A web-based system for statistical shape analysis in temporomandibular joint osteoarthritis.},
author = {Michoud L and Huang C and Yatabe M and Bianchi J and et al},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6494085/},
doi = {10.1117/12.2506032},
year = {2019},
date = {2019-05-15},
journal = {Proc SPIE-the Int Soc Opt Eng},
volume = {10953},
abstract = {This study presents a web-system repository: Data Storage for Computation and Integration (DSCI) for Osteoarthritis of the temporomandibular joint (TMJ OA). This environment aims to maintain and allow contributions to the database from multi-clinical centers and compute novel statistics for disease classification. For this purpose, imaging datasets stored in the DSCI consisted of three-dimensional (3D) surface meshes of condyles from CBCT, clinical markers and biological markers in healthy and TMJ OA subjects. A clusterpost package was included in the web platform to be able to execute the jobs in remote computing grids. The DSCI application allowed runs of statistical packages, such as the Multivariate Functional Shape Data Analysis to compute global correlations between covariates and the morphological variability, as well as local p-values in the 3D condylar morphology. In conclusion, the DSCI allows interactive advanced statistical tools for non-statistical experts.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This study presents a web-system repository: Data Storage for Computation and Integration (DSCI) for Osteoarthritis of the temporomandibular joint (TMJ OA). This environment aims to maintain and allow contributions to the database from multi-clinical centers and compute novel statistics for disease classification. For this purpose, imaging datasets stored in the DSCI consisted of three-dimensional (3D) surface meshes of condyles from CBCT, clinical markers and biological markers in healthy and TMJ OA subjects. A clusterpost package was included in the web platform to be able to execute the jobs in remote computing grids. The DSCI application allowed runs of statistical packages, such as the Multivariate Functional Shape Data Analysis to compute global correlations between covariates and the morphological variability, as well as local p-values in the 3D condylar morphology. In conclusion, the DSCI allows interactive advanced statistical tools for non-statistical experts.
Sam, A; Currie, K; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Reliability of different 3D cephalometric landmarks in CBCT: A systematic review. Journal Article
In: Angle Orthod, vol. 89, no. 2, pp. 317-332, 2019.
@article{Sam2019,
title = {Reliability of different 3D cephalometric landmarks in CBCT: A systematic review.},
author = {A Sam and K Currie and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8120873/},
doi = {10.2319/042018-302.1},
year = {2019},
date = {2019-03-00},
urldate = {2019-03-00},
journal = {Angle Orthod},
volume = {89},
number = {2},
pages = {317-332},
abstract = {Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Conventional two-dimensional (2D) cephalometric radiography is an integral part of orthodontic patient diagnosis and treatment planning. One must be mindful of its limitations as it indeed is a 2D representation of a vaster three-dimensional (3D) object. Issues with projection errors, landmark identification, and measurement inaccuracies impose significant limitations, which may now be overcome with the advent of cone-beam computed tomography (CBCT). A systematic review of the reliability of different 3D cephalometric landmarks in CBCT imaging was conducted.
Nina, T R; De, D Priscille; Marilia, Y; Antonio, R; Marcos, I; Beatriz, P; Martin, S; Joao, R G; Jonas, B; Lucia, C; Juan-Carlos, P
Shape variation analyzer: a classifier for temporomandibular joint damaged by osteoarthritis Journal Article
In: Dento Maxillo Facial Radiology, vol. 10950, 2019.
@article{Ribera2019,
title = {Shape variation analyzer: a classifier for temporomandibular joint damaged by osteoarthritis},
author = {T R Nina and D Priscille De and Y Marilia and R Antonio and I Marcos and P Beatriz and S Martin and R G Joao and B Jonas and C Lucia and P Juan-Carlos },
url = {https://pubmed.ncbi.nlm.nih.gov/31359900/},
doi = {10.1117/12.2506018},
year = {2019},
date = {2019-02-00},
urldate = {2019-02-00},
journal = {Dento Maxillo Facial Radiology},
volume = {10950},
abstract = {We developed a deep learning neural network, the Shape Variation Analyzer (SVA), that allows disease staging of bony changes in temporomandibular joint (TMJ) osteoarthritis (OA). The sample was composed of 259 TMJ CBCT scans for the training set and 34 for the testing dataset. The 3D meshes had been previously classified in 6 groups by 2 expert clinicians. We improved the robustness of the training data using data augmentation, SMOTE, to alleviate over-fitting and to balance classes. We combined geometrical features and a shape descriptor, heat kernel signature, to describe every shape. The results were compared to nine different supervised machine learning algorithms. The deep learning neural network was the most accurate for classification of TMJ OA. In conclusion, SVA is a 3D Sheer extension that classifies pathology of the temporomandibular joint osteoarthritis cases based on 3D morphology.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We developed a deep learning neural network, the Shape Variation Analyzer (SVA), that allows disease staging of bony changes in temporomandibular joint (TMJ) osteoarthritis (OA). The sample was composed of 259 TMJ CBCT scans for the training set and 34 for the testing dataset. The 3D meshes had been previously classified in 6 groups by 2 expert clinicians. We improved the robustness of the training data using data augmentation, SMOTE, to alleviate over-fitting and to balance classes. We combined geometrical features and a shape descriptor, heat kernel signature, to describe every shape. The results were compared to nine different supervised machine learning algorithms. The deep learning neural network was the most accurate for classification of TMJ OA. In conclusion, SVA is a 3D Sheer extension that classifies pathology of the temporomandibular joint osteoarthritis cases based on 3D morphology.
Garnett, B; Mahod, K; Nguyen, M; Al-Khateeb, A; Liu, S; Boyd, R; Oh, H
Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances. Journal Article
In: Angle Orthodontist, vol. 89, no. 1, pp. 3-9, 2019.
@article{Garnett2019,
title = {Cephalometric comparison of adult anterior open bite treatment using clear aligners and fixed appliances.},
author = {B Garnett and K Mahod and M Nguyen and A Al-Khateeb and S Liu and R Boyd and H Oh},
url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8137127/},
doi = {10.2319/010418-4.1},
year = {2019},
date = {2019-01-00},
journal = {Angle Orthodontist},
volume = {89},
number = {1},
pages = {3-9},
abstract = {To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
To compare fixed appliances and clear aligner therapy in correcting anterior open bite and in controlling the vertical dimension in adult patients with hyperdivergent skeletal patterns.
J, Bianchi; Guilherme, M P; Leonardo, K; Jaqueline, I; Larry, M W; Joao, R G
Three-dimensional stability analysis of maxillomandibular advancement surgery with and without articular disc repositioning Journal Article
In: J Craniomaxillofacial Surgery, vol. 46, no. 8, pp. 1348-1354, 2018.
@article{Bianchi2018,
title = {Three-dimensional stability analysis of maxillomandibular advancement surgery with and without articular disc repositioning},
author = {Bianchi J and M P Guilherme and K Leonardo and I Jaqueline and M W Larry and R G Joao },
year = {2018},
date = {2018-08-00},
urldate = {2018-08-00},
journal = {J Craniomaxillofacial Surgery},
volume = {46},
number = {8},
pages = {1348-1354},
abstract = {This retrospective cohort study aimed to assess, three-dimensionally, mandible and maxilla changes following maxillomandibular advancement (MMA), with and without repositioning of TMJ articular discs. The sample comprised cone-beam computed tomography data from 32 subjects: group 1 (n = 12) without disc displacement and group 2 (n = 20) with bilateral disc repositioning. An automatic cranial base superimposition method was used to register the images at three time points: T1 (preoperative), T2 (postoperative), and T3 (at least 11 months follow-up). To assess surgical changes (T2-T1) and adaptive responses (T3-T2), the images were compared quantitatively and qualitatively using the shape correspondence method. The results showed that surgical displacements were similar in both groups for all the regions of interest except the condyles, which moved in opposite directions - group 1 to superior and posterior positions, and group 2 to inferior and anterior positions. For adaptive responses, we observed high individual variability, with lower variability in group 2. Sagittal relapse was similar in both groups. In conclusion, there were no significant differences in skeletal stability between the two groups. The maxillomandibular advancement surgeries, with rotation of the occlusal plane, had stable results for both groups immediately after surgery and at 1-year follow-up.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This retrospective cohort study aimed to assess, three-dimensionally, mandible and maxilla changes following maxillomandibular advancement (MMA), with and without repositioning of TMJ articular discs. The sample comprised cone-beam computed tomography data from 32 subjects: group 1 (n = 12) without disc displacement and group 2 (n = 20) with bilateral disc repositioning. An automatic cranial base superimposition method was used to register the images at three time points: T1 (preoperative), T2 (postoperative), and T3 (at least 11 months follow-up). To assess surgical changes (T2-T1) and adaptive responses (T3-T2), the images were compared quantitatively and qualitatively using the shape correspondence method. The results showed that surgical displacements were similar in both groups for all the regions of interest except the condyles, which moved in opposite directions - group 1 to superior and posterior positions, and group 2 to inferior and anterior positions. For adaptive responses, we observed high individual variability, with lower variability in group 2. Sagittal relapse was similar in both groups. In conclusion, there were no significant differences in skeletal stability between the two groups. The maxillomandibular advancement surgeries, with rotation of the occlusal plane, had stable results for both groups immediately after surgery and at 1-year follow-up.
Oscar, C L; Jonas, B; Dirceu, R; Joao, B N; Bernd, H
Mandible and skull segmentation in cone-beam computed tomography using super-voxels and graph clustering Journal Article
In: The Visual Computer, vol. 35, pp. 1461-1474, 2018.
@article{Linares2018,
title = {Mandible and skull segmentation in cone-beam computed tomography using super-voxels and graph clustering},
author = {C L Oscar and B Jonas and R Dirceu and B N Joao and H Bernd },
url = {https://link.springer.com/article/10.1007/s00371-018-1511-0},
doi = {https://doi.org/10.1007/s00371-018-1511-0},
year = {2018},
date = {2018-04-26},
urldate = {2018-04-26},
journal = {The Visual Computer},
volume = {35},
pages = {1461-1474},
abstract = {Cone beam computed tomography (CBCT) is a medical imaging technique employed for diagnosis and treatment of patients with cranio-maxillofacial deformities. CBCT 3D reconstruction and segmentation of bones such as mandible or maxilla are essential procedures in surgical and orthodontic treatments. However, CBCT image processing may be impaired by features such as low contrast, inhomogeneity, noise and artifacts. Besides, values assigned to voxels are relative Hounsfield units unlike traditional computed tomography (CT). Such drawbacks render CBCT segmentation a difficult and time-consuming task, usually performed manually with tools designed for medical image processing. We present an interactive two-stage method for the segmentation of CBCT: (i) we first perform an automatic segmentation of bone structures with super-voxels, allowing a compact graph representation of the 3D data; (ii) next, a user-placed seed process guides a graph partitioning algorithm, splitting the extracted bones into mandible and skull. We have evaluated our segmentation method in three different scenarios and compared the results with ground truth data of the mandible and the skull. Results show that our method produces accurate segmentation and is robust to changes in parameters. We also compared our method with two similar segmentation strategy and showed that it produces more accurate segmentation. Finally, we evaluated our method for CT data of patients with deformed or missing bones and the segmentation was accurate for all data. The segmentation of a typical CBCT takes in average 5 min, which is faster than most techniques currently available.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Cone beam computed tomography (CBCT) is a medical imaging technique employed for diagnosis and treatment of patients with cranio-maxillofacial deformities. CBCT 3D reconstruction and segmentation of bones such as mandible or maxilla are essential procedures in surgical and orthodontic treatments. However, CBCT image processing may be impaired by features such as low contrast, inhomogeneity, noise and artifacts. Besides, values assigned to voxels are relative Hounsfield units unlike traditional computed tomography (CT). Such drawbacks render CBCT segmentation a difficult and time-consuming task, usually performed manually with tools designed for medical image processing. We present an interactive two-stage method for the segmentation of CBCT: (i) we first perform an automatic segmentation of bone structures with super-voxels, allowing a compact graph representation of the 3D data; (ii) next, a user-placed seed process guides a graph partitioning algorithm, splitting the extracted bones into mandible and skull. We have evaluated our segmentation method in three different scenarios and compared the results with ground truth data of the mandible and the skull. Results show that our method produces accurate segmentation and is robust to changes in parameters. We also compared our method with two similar segmentation strategy and showed that it produces more accurate segmentation. Finally, we evaluated our method for CT data of patients with deformed or missing bones and the segmentation was accurate for all data. The segmentation of a typical CBCT takes in average 5 min, which is faster than most techniques currently available.
Liu, S; Oh, H; Chambers, D; Baumrind, S; Xu, T
Interpreting Weightings of the Peer Assessment Rating Index and the Discrepancy Index across Contexts on Chinese Patients. Journal Article
In: European Journal of Orthodontics, vol. 40, no. 2, pp. 157-163, 2018.
@article{Liu2017b,
title = {Interpreting Weightings of the Peer Assessment Rating Index and the Discrepancy Index across Contexts on Chinese Patients.},
author = {S Liu and H Oh and D Chambers and S Baumrind and T Xu},
url = {https://pubmed.ncbi.nlm.nih.gov/28575327/},
doi = {10.1093/ejo/cjx043},
year = {2018},
date = {2018-04-06},
urldate = {2018-04-06},
journal = {European Journal of Orthodontics},
volume = {40},
number = {2},
pages = {157-163},
abstract = {Determine optimal weightings of Peer Assessment Rating (PAR) index and Discrepancy Index (DI) for malocclusion severity assessment in Chinese orthodontic patients.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Determine optimal weightings of Peer Assessment Rating (PAR) index and Discrepancy Index (DI) for malocclusion severity assessment in Chinese orthodontic patients.
J, Bianchi; Dos, S P Ary; Jaqueline, I; Daniel, P O R; Joao, R G
Effect of temporomandibular joint articular disc repositioning on anterior open-bite malocclusion: An orthodontic-surgical approach Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 152, no. 6, pp. 848-858, 2017.
@article{Bianchi2017,
title = {Effect of temporomandibular joint articular disc repositioning on anterior open-bite malocclusion: An orthodontic-surgical approach},
author = {Bianchi J and S P Ary Dos and I Jaqueline and P O R Daniel and R G Joao },
url = {https://www.sciencedirect.com/science/article/pii/S0889540617306121},
doi = {10.1016/j.ajodo.2016.09.032},
year = {2017},
date = {2017-12-00},
urldate = {2017-12-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {152},
number = {6},
pages = {848-858},
abstract = {An anterior open bite is a challenge to orthodontic treatment; it has a multifactorial etiology and a wide range ofintervention options. Temporomandibular joint (TMJ) disorders are a risk factor for the development of malocclu-sions such as the anterior open bite, especially in patients who have TMJ osteoarthritis with disc displacement.Articular disc repositioning surgery is an available option for treating this pathology, and it contributes to main-taining the condyles in a more stable position. The aim of this article was to report the case of a 20-year-oldwoman diagnosed with anterior open bite and TMJ osteoarthritis with bilateral disc displacement. The patientreceived both orthodontic treatment and TMJ disc repositioning surgery. Cone-beam computed tomographywas used to create 3-dimensional models of the condyles with regional superposition, and assessment ofbone remodeling was performed at different time intervals. Complete orthodontic and surgical treatment timewas approximately 12 months. The results provided a stable correction of the patient's anterior open bite witha 2-year follow-up and favorable bone remodeling of the condyles due to functional improvement of the TMJ.(Am J Orthod Dentofacial Orthop 2017;152:848-58)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
An anterior open bite is a challenge to orthodontic treatment; it has a multifactorial etiology and a wide range ofintervention options. Temporomandibular joint (TMJ) disorders are a risk factor for the development of malocclu-sions such as the anterior open bite, especially in patients who have TMJ osteoarthritis with disc displacement.Articular disc repositioning surgery is an available option for treating this pathology, and it contributes to main-taining the condyles in a more stable position. The aim of this article was to report the case of a 20-year-oldwoman diagnosed with anterior open bite and TMJ osteoarthritis with bilateral disc displacement. The patientreceived both orthodontic treatment and TMJ disc repositioning surgery. Cone-beam computed tomographywas used to create 3-dimensional models of the condyles with regional superposition, and assessment ofbone remodeling was performed at different time intervals. Complete orthodontic and surgical treatment timewas approximately 12 months. The results provided a stable correction of the patient's anterior open bite witha 2-year follow-up and favorable bone remodeling of the condyles due to functional improvement of the TMJ.(Am J Orthod Dentofacial Orthop 2017;152:848-58)
Currie, K; Sawchuk, D; Saltaji, H; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Posterior cranial base natural growth and development: A systematic review. Journal Article
In: Angle Orthodontist, vol. 87, no. 6, pp. 897-910, 2017.
@article{Currie2017b,
title = {Posterior cranial base natural growth and development: A systematic review. },
author = {K Currie and D Sawchuk and H Saltaji and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://pubmed.ncbi.nlm.nih.gov/28737426/},
doi = {10.2319/032717-218.1},
year = {2017},
date = {2017-11-00},
journal = {Angle Orthodontist},
volume = {87},
number = {6},
pages = {897-910},
abstract = {To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).
Xu, Y; Oh, H; Lagravere-Vich, M
Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. Journal Article
In: International Journal of Orthodontics, vol. 15, no. 3, pp. 365-387, 2017.
@article{Xu2017,
title = {Malocclusion Class II-Division 1 skeletal and dental relationships measured by Cone-Beam Computed Tomography. },
author = {Y Xu and H Oh and M Lagravere-Vich},
url = {https://www.sciencedirect.com/science/article/pii/S1761722717300621},
doi = {10.1016/j.ortho.2017.06.014},
year = {2017},
date = {2017-09-00},
journal = {International Journal of Orthodontics},
volume = {15},
number = {3},
pages = {365-387},
abstract = {The purpose of this study was to locate traditionally-used landmarks in two-dimensional (2D) images and newly-suggested ones in three-dimensional (3D) images (cone-beam computer tomographies [CBCTs]) and determine possible relationships between them to categorize patients with Class II-1 malocclusion.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The purpose of this study was to locate traditionally-used landmarks in two-dimensional (2D) images and newly-suggested ones in three-dimensional (3D) images (cone-beam computer tomographies [CBCTs]) and determine possible relationships between them to categorize patients with Class II-1 malocclusion.
Hwang, Hyeon-Shik; Oh, Min-Hee; Oh, Hee-Kyun; Oh, Heesoo
Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry Journal Article
In: American Journal of Orthodontics and Dentofacial Orthopedics, vol. 152, no. 2, pp. 255-267, 2017.
@article{Hwang2017,
title = {Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry},
author = {Hyeon-Shik Hwang and Min-Hee Oh and Hee-Kyun Oh and Heesoo Oh},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Surgery-first-approach-in-correctingskeletal-CLass-III_AJODO-2017.pdf},
doi = {10.1016/j.ajodo.2014.10.040},
year = {2017},
date = {2017-08-01},
urldate = {2017-08-01},
journal = {American Journal of Orthodontics and Dentofacial Orthopedics},
volume = {152},
number = {2},
pages = {255-267},
abstract = {This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained. (Am J Orthod Dentofacial Orthop 2017;152:255-67) },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained. (Am J Orthod Dentofacial Orthop 2017;152:255-67)
Lui, S; Oh, H; Chambers, D; Weng, X; Chen, Q; Baumrind, S; Xu, T
Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists. Journal Article
In: Orthodontics and Craniofacial Research, vol. 20, no. 3, pp. 140-145, 2017.
@article{Liu2017b,
title = {Validity and reliability of the ABO Discrepancy Index and PAR Index (Peer Assessment Rating) for evaluating malocclusion severity among Chinese orthodontists.},
author = {S Lui and H Oh and D Chambers and X Weng and Q Chen and S Baumrind and T Xu},
url = {https://pubmed.ncbi.nlm.nih.gov/28670875/},
doi = {10.1111/ocr.12195},
year = {2017},
date = {2017-08-00},
journal = {Orthodontics and Craniofacial Research},
volume = {20},
number = {3},
pages = {140-145},
abstract = {To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion severity in Chinese orthodontic patients.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion severity in Chinese orthodontic patients.
Hwang, HS; Oh, MH; Oh, HK
Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 152, no. 2, pp. 255-267, 2017.
@article{Hwang2017b,
title = {Surgery-first approach in correcting skeletal Class III malocclusion with mandibular asymmetry. },
author = {HS Hwang and MH Oh and HK Oh},
url = {https://pubmed.ncbi.nlm.nih.gov/28760288/},
doi = {10.1016/j.ajodo.2014.10.040},
year = {2017},
date = {2017-08-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {152},
number = {2},
pages = {255-267},
abstract = {This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach. Immediate facial improvement was achieved and postsurgical orthodontic treatment was efficiently carried out. The total treatment time was 16 months. The patient's facial appearance improved significantly and a stable surgical orthodontic outcome was obtained.
Oh, Heesoo; Baumrind, Sheldon; Korn, Edward L.; Dugoni, Steven; Boero, Roger; Aubert, Maryse; Boyd, Robert
A retrospective study of Class II mixed-dentition treatment Journal Article
In: Angle Orthodontist, vol. 87, no. 1, pp. 56-67, 2017.
@article{Oh2017,
title = {A retrospective study of Class II mixed-dentition treatment},
author = {Heesoo Oh and Sheldon Baumrind and Edward L. Korn and Steven Dugoni and Roger Boero and Maryse Aubert and Robert Boyd},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Oh_A-retrospective-study-of-Class-II-mixed-dentition-treatment.pdf},
year = {2017},
date = {2017-07-08},
journal = {Angle Orthodontist},
volume = {87},
number = {1},
pages = {56-67},
abstract = {Objective: To consider the effectiveness of early treatment using one mixed-dentition approach to the correction of moderate and severe Class II malocclusions.
Materials and Methods: Three groups of Class II subjects were included in this retrospective study: an early treatment (EarlyTx) group that first presented at age 7 to 9.5 years (n ¼ 54), a late treatment (LateTx) group whose first orthodontic visit occurred between ages 12 and 15 (n ¼ 58), and an untreated Class II (UnTx) group to assess the pretreatment comparability of the two treated groups (n¼51). Thirteen conventional cephalometric measurements were reported for each group and Class II molar severity was measured on the study casts of the EarlyTx and LateTx groups.
Results: Successful Class II correction was observed in approximately three quarters of both the EarlyTx group and the LateTx group at the end of treatment. EarlyTx patients had fewer permanent teeth extracted than did the LateTx patients (5.6% vs 37.9%, P , .001) and spent less time in fullbonded appliance therapy in the permanent dentition than did LateTx patients (1.7 6 0.8 vs 2.6 6 0.7years, P , .001). When supervision time is included, the EarlyTx group had longer total treatment time and averaged more visits than did the LateTx group (53.1 6 18. 8 vs 33.7 6 8.3, P, .0001). Fifty-five percent of the LateTx extraction cases involved removal of the maxillary first premolars only and were finished in a Class II molar relationship.
Conclusion: EarlyTx comprehensive mixed-dentition treatment was an effective modality for early correction of Class II malocclusions. (Angle Orthod. 2017;87:56–67)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Objective: To consider the effectiveness of early treatment using one mixed-dentition approach to the correction of moderate and severe Class II malocclusions.
Materials and Methods: Three groups of Class II subjects were included in this retrospective study: an early treatment (EarlyTx) group that first presented at age 7 to 9.5 years (n ¼ 54), a late treatment (LateTx) group whose first orthodontic visit occurred between ages 12 and 15 (n ¼ 58), and an untreated Class II (UnTx) group to assess the pretreatment comparability of the two treated groups (n¼51). Thirteen conventional cephalometric measurements were reported for each group and Class II molar severity was measured on the study casts of the EarlyTx and LateTx groups.
Results: Successful Class II correction was observed in approximately three quarters of both the EarlyTx group and the LateTx group at the end of treatment. EarlyTx patients had fewer permanent teeth extracted than did the LateTx patients (5.6% vs 37.9%, P , .001) and spent less time in fullbonded appliance therapy in the permanent dentition than did LateTx patients (1.7 6 0.8 vs 2.6 6 0.7years, P , .001). When supervision time is included, the EarlyTx group had longer total treatment time and averaged more visits than did the LateTx group (53.1 6 18. 8 vs 33.7 6 8.3, P, .0001). Fifty-five percent of the LateTx extraction cases involved removal of the maxillary first premolars only and were finished in a Class II molar relationship.
Conclusion: EarlyTx comprehensive mixed-dentition treatment was an effective modality for early correction of Class II malocclusions. (Angle Orthod. 2017;87:56–67)
Materials and Methods: Three groups of Class II subjects were included in this retrospective study: an early treatment (EarlyTx) group that first presented at age 7 to 9.5 years (n ¼ 54), a late treatment (LateTx) group whose first orthodontic visit occurred between ages 12 and 15 (n ¼ 58), and an untreated Class II (UnTx) group to assess the pretreatment comparability of the two treated groups (n¼51). Thirteen conventional cephalometric measurements were reported for each group and Class II molar severity was measured on the study casts of the EarlyTx and LateTx groups.
Results: Successful Class II correction was observed in approximately three quarters of both the EarlyTx group and the LateTx group at the end of treatment. EarlyTx patients had fewer permanent teeth extracted than did the LateTx patients (5.6% vs 37.9%, P , .001) and spent less time in fullbonded appliance therapy in the permanent dentition than did LateTx patients (1.7 6 0.8 vs 2.6 6 0.7years, P , .001). When supervision time is included, the EarlyTx group had longer total treatment time and averaged more visits than did the LateTx group (53.1 6 18. 8 vs 33.7 6 8.3, P, .0001). Fifty-five percent of the LateTx extraction cases involved removal of the maxillary first premolars only and were finished in a Class II molar relationship.
Conclusion: EarlyTx comprehensive mixed-dentition treatment was an effective modality for early correction of Class II malocclusions. (Angle Orthod. 2017;87:56–67)
Liu, Siqi; Oh, Heesoo; Chambers, David W.; Baumrind, Sheldon; Xu, Tianmin
Validity of the American Board of Orthodontics Discrepancy Index and the Peer Assessment Rating Index for comprehensive evaluation of malocclusion severity Journal Article
In: Orthodontics & Craniofacial Research, vol. 2017, no. 20, pp. 140-145, 2017.
@article{Liu2017,
title = {Validity of the American Board of Orthodontics Discrepancy Index and the Peer Assessment Rating Index for comprehensive evaluation of malocclusion severity},
author = {Siqi Liu and Heesoo Oh and David W. Chambers and Sheldon Baumrind and Tianmin Xu},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Validity-and-reliability-of-the-ABO-Discrepancy-Index-and-PAR-Index_2017OCR.pdf},
year = {2017},
date = {2017-07-03},
journal = {Orthodontics & Craniofacial Research},
volume = {2017},
number = {20},
pages = {140-145},
abstract = {Objectives: To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion
severity in Chinese orthodontic patients.Setting and Sample Population: A stratified random sample of 120 orthodontic patients based on Angle classification was collected from six university orthodontic centres.
Material and Methods: Sixty-nine orthodontists rated malocclusion severity on a five-point scale by assessing a full set of pre-treatment records for each case and listed reasons for their decision. Their judgement was then compared with ABO-DI and PAR scores determined by three calibrated examiners.
Results: Excellent interexaminer reliability of clinician judgement, ABO-DI and PAR index was demonstrated by the Intraclass Correlation Coefficient (rho= 0.995, 0.990 and 0.964, respectively). Both the ABO-DI and US-PAR index showed good correlation with clinician judgement (r=.700 and r=.707, respectively). There was variability among the different Angle classifications: the ABO-DI showed the highest correlation with clinician judgement in Class II patients (r=.780), whereas the US-PAR index showed the highest correlation with clinician judgement in Class III patients (r=.710). Both indices demonstrated the lowest correlations with clinician judgement in Class I patients.
Conclusion: With strong interexaminer agreement, the panel consensus was used for validating the ABO-DI and US-PAR index for malocclusion severity. Overall, the ABO-DI
and US-PAR index were reliable for measuring malocclusion severity with significantly variable weightings for different Angle classifications. Further modification of the indices for different Angle classification may be indicated.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Objectives: To assess the validity of the American Board of Orthodontics Discrepancy Index (ABO-DI) and Peer Assessment Rating (PAR) Index in evaluating malocclusion
severity in Chinese orthodontic patients.Setting and Sample Population: A stratified random sample of 120 orthodontic patients based on Angle classification was collected from six university orthodontic centres.
Material and Methods: Sixty-nine orthodontists rated malocclusion severity on a five-point scale by assessing a full set of pre-treatment records for each case and listed reasons for their decision. Their judgement was then compared with ABO-DI and PAR scores determined by three calibrated examiners.
Results: Excellent interexaminer reliability of clinician judgement, ABO-DI and PAR index was demonstrated by the Intraclass Correlation Coefficient (rho= 0.995, 0.990 and 0.964, respectively). Both the ABO-DI and US-PAR index showed good correlation with clinician judgement (r=.700 and r=.707, respectively). There was variability among the different Angle classifications: the ABO-DI showed the highest correlation with clinician judgement in Class II patients (r=.780), whereas the US-PAR index showed the highest correlation with clinician judgement in Class III patients (r=.710). Both indices demonstrated the lowest correlations with clinician judgement in Class I patients.
Conclusion: With strong interexaminer agreement, the panel consensus was used for validating the ABO-DI and US-PAR index for malocclusion severity. Overall, the ABO-DI
and US-PAR index were reliable for measuring malocclusion severity with significantly variable weightings for different Angle classifications. Further modification of the indices for different Angle classification may be indicated.
severity in Chinese orthodontic patients.Setting and Sample Population: A stratified random sample of 120 orthodontic patients based on Angle classification was collected from six university orthodontic centres.
Material and Methods: Sixty-nine orthodontists rated malocclusion severity on a five-point scale by assessing a full set of pre-treatment records for each case and listed reasons for their decision. Their judgement was then compared with ABO-DI and PAR scores determined by three calibrated examiners.
Results: Excellent interexaminer reliability of clinician judgement, ABO-DI and PAR index was demonstrated by the Intraclass Correlation Coefficient (rho= 0.995, 0.990 and 0.964, respectively). Both the ABO-DI and US-PAR index showed good correlation with clinician judgement (r=.700 and r=.707, respectively). There was variability among the different Angle classifications: the ABO-DI showed the highest correlation with clinician judgement in Class II patients (r=.780), whereas the US-PAR index showed the highest correlation with clinician judgement in Class III patients (r=.710). Both indices demonstrated the lowest correlations with clinician judgement in Class I patients.
Conclusion: With strong interexaminer agreement, the panel consensus was used for validating the ABO-DI and US-PAR index for malocclusion severity. Overall, the ABO-DI
and US-PAR index were reliable for measuring malocclusion severity with significantly variable weightings for different Angle classifications. Further modification of the indices for different Angle classification may be indicated.
Liu, Siqi; Oh, Heesoo; Chambers, David W.; Xu, Tianmin; Baumrind, Sheldon
Interpreting weightings of the peer assessment rating index and the discrepancy index across contexts on Chinese patients Journal Article
In: European Journal of Orthodontics, vol. 40, no. 2, pp. 1-7, 2017, ISBN: 0141-5387.
@article{Liu2017b,
title = {Interpreting weightings of the peer assessment rating index and the discrepancy index across contexts on Chinese patients},
author = {Siqi Liu and Heesoo Oh and David W. Chambers and Tianmin Xu and Sheldon Baumrind},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Interpreting-weightings-of-the-PAR-and-ABO-DI_EJO-2017.pdf},
doi = {10.1093/ejo/cjx043},
isbn = {0141-5387},
year = {2017},
date = {2017-04-01},
journal = {European Journal of Orthodontics},
volume = {40},
number = {2},
pages = {1-7},
abstract = {Objective: Determine optimal weightings of Peer Assessment Rating (PAR) index and Discrepancy Index (DI) for malocclusion severity assessment in Chinese orthodontic patients.
Methods: Sixty-nine Chinese orthodontists assessed a full set of pre-treatment records from a stratified random sample of 120 subjects gathered from six university orthodontic centres. Using professional judgment as the outcome variable, multiple regression analyses were performed to derive customized weighting systems for the PAR index and DI, for all subjects and each Angle classification subgroup.
Results: Professional judgment was consistent, with an Intraclass Correlation Coefficient (ICC) of0.995. The PAR index or DI can be reliably measured, with ICC = 0.959 and 0.990, respectively. The predictive accuracy of PAR index was greatly improved by the Chinese weighting process (from r = 0.431 to r = 0.788) with almost equal distribution in each Angle classification subgroup. The Chinese-weighted DI showed a higher predictive accuracy, at P = 0.01, compared with the PAR index (r = 0.851 versus r = 0.788). A better performance was found in the Class II group (r = 0.890) when compared to Class I (r = 0.736) and III (r = 0.785) groups.
Conclusions: The Chinese-weighted PAR index and DI were capable of predicting 62 per cent and73 per cent of total variance in the professional judgment of malocclusion severity in Chinese patients. Differential prediction across Angle classifications merits attention since different weighting formulas were found.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Objective: Determine optimal weightings of Peer Assessment Rating (PAR) index and Discrepancy Index (DI) for malocclusion severity assessment in Chinese orthodontic patients.
Methods: Sixty-nine Chinese orthodontists assessed a full set of pre-treatment records from a stratified random sample of 120 subjects gathered from six university orthodontic centres. Using professional judgment as the outcome variable, multiple regression analyses were performed to derive customized weighting systems for the PAR index and DI, for all subjects and each Angle classification subgroup.
Results: Professional judgment was consistent, with an Intraclass Correlation Coefficient (ICC) of0.995. The PAR index or DI can be reliably measured, with ICC = 0.959 and 0.990, respectively. The predictive accuracy of PAR index was greatly improved by the Chinese weighting process (from r = 0.431 to r = 0.788) with almost equal distribution in each Angle classification subgroup. The Chinese-weighted DI showed a higher predictive accuracy, at P = 0.01, compared with the PAR index (r = 0.851 versus r = 0.788). A better performance was found in the Class II group (r = 0.890) when compared to Class I (r = 0.736) and III (r = 0.785) groups.
Conclusions: The Chinese-weighted PAR index and DI were capable of predicting 62 per cent and73 per cent of total variance in the professional judgment of malocclusion severity in Chinese patients. Differential prediction across Angle classifications merits attention since different weighting formulas were found.
Methods: Sixty-nine Chinese orthodontists assessed a full set of pre-treatment records from a stratified random sample of 120 subjects gathered from six university orthodontic centres. Using professional judgment as the outcome variable, multiple regression analyses were performed to derive customized weighting systems for the PAR index and DI, for all subjects and each Angle classification subgroup.
Results: Professional judgment was consistent, with an Intraclass Correlation Coefficient (ICC) of0.995. The PAR index or DI can be reliably measured, with ICC = 0.959 and 0.990, respectively. The predictive accuracy of PAR index was greatly improved by the Chinese weighting process (from r = 0.431 to r = 0.788) with almost equal distribution in each Angle classification subgroup. The Chinese-weighted DI showed a higher predictive accuracy, at P = 0.01, compared with the PAR index (r = 0.851 versus r = 0.788). A better performance was found in the Class II group (r = 0.890) when compared to Class I (r = 0.736) and III (r = 0.785) groups.
Conclusions: The Chinese-weighted PAR index and DI were capable of predicting 62 per cent and73 per cent of total variance in the professional judgment of malocclusion severity in Chinese patients. Differential prediction across Angle classifications merits attention since different weighting formulas were found.
Afrand, Mona; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.
Growth changes in the anterior and middle cranial bases assessed with cone-beam computed tomography in adolescents Journal Article
In: American Journal of Orthodontics and Dentofacial Orthopedics, vol. 151, no. 2, pp. 342-50, 2017.
@article{Afrand2017,
title = {Growth changes in the anterior and middle cranial bases assessed with cone-beam computed tomography in adolescents},
author = {Mona Afrand and Heesoo Oh and Carlos Flores-Mirand and Manuel O. Lagravère-Vich},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Growth-changes-in-the-anterior-and-middel-cranial-base.pdf},
year = {2017},
date = {2017-02-01},
journal = {American Journal of Orthodontics and Dentofacial Orthopedics},
volume = {151},
number = {2},
pages = {342-50},
abstract = {Introduction: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks.
Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth.
Results: The majority of the proposed 3-dimensional landmarks with the exception of the lesser wing of the sphenoid showed acceptable intrarater and interrater reliabilities. The distances measured between foramina and canals in the transverse dimension showed evidence of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances.
Conclusions: In this adolescent sample, minor growth-related changes were observed in the anterior and middle cranial bases. The midsagittal area of the anterior cranial base (foramen caecum to presphenoid) was stable. The right and left anterior and posterior clinoid processes can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Introduction: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks.
Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth.
Results: The majority of the proposed 3-dimensional landmarks with the exception of the lesser wing of the sphenoid showed acceptable intrarater and interrater reliabilities. The distances measured between foramina and canals in the transverse dimension showed evidence of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances.
Conclusions: In this adolescent sample, minor growth-related changes were observed in the anterior and middle cranial bases. The midsagittal area of the anterior cranial base (foramen caecum to presphenoid) was stable. The right and left anterior and posterior clinoid processes can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50)
Methods: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy. These selected landmarks were identified in the images of an already available sample of adolescents (n 560) taken at 2 time points (19 months apart) to assess dimensional changes with growth.
Results: The majority of the proposed 3-dimensional landmarks with the exception of the lesser wing of the sphenoid showed acceptable intrarater and interrater reliabilities. The distances measured between foramina and canals in the transverse dimension showed evidence of increases in size. However, the mean amounts of increase in these transverse distances were equal to or less than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior and posterior clinoid processes. The vertical dimensions showed evidence of some changes, but these were within 2% of the original distances.
Conclusions: In this adolescent sample, minor growth-related changes were observed in the anterior and middle cranial bases. The midsagittal area of the anterior cranial base (foramen caecum to presphenoid) was stable. The right and left anterior and posterior clinoid processes can be used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017; 151:342-50)
Afrand, M; Oh, H; Flores-Mir, C; Lagravere-Vich, M
Growth changes in the anterior and middle cranial bases as assessed through cone-beam computed tomography in adolescents. Journal Article
In: Am J Orthod Dentofacial Orthop, vol. 151, no. 2, pp. 342-350, 2017.
@article{Afrand2017b,
title = {Growth changes in the anterior and middle cranial bases as assessed through cone-beam computed tomography in adolescents.},
author = {M Afrand and H Oh and C Flores-Mir and M Lagravere-Vich},
url = {https://www.sciencedirect.com/science/article/pii/S0889540616307405},
doi = {10.1016/j.ajodo.2016.02.032},
year = {2017},
date = {2017-02-00},
journal = {Am J Orthod Dentofacial Orthop},
volume = {151},
number = {2},
pages = {342-350},
abstract = {Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionallyevaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in theanterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial baseswith growth were evaluated by using the previously selected landmarks.Methods:Cone-beam computed to-mography images of 10 dry skulls were used to identify useful landmarks from different areas of the anteriorand middle cranial bases based on their reliability and accuracy. These selected landmarks were identified inthe images of an already available sample of adolescents (n560) taken at 2 time points (19 months apart)to assess dimensional changes with growth.Results:The majority of the proposed 3-dimensional landmarkswith the exception of the lesser wing of the sphenoid showed acceptable intrarater and interrater reliabilities.The distances measured between foramina and canals in the transverse dimension showed evidence ofincreases in size. However, the mean amounts of increase in these transverse distances were equal to orless than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior andposterior clinoid processes. The vertical dimensions showed evidence of some changes, but these werewithin 2% of the original distances.Conclusions:In this adolescent sample, minor growth-related changeswere observed in the anterior and middle cranial bases. The midsagittal area of the anterior cranial base(foramen caecum to presphenoid) was stable. The right and left anterior and posterior clinoid processes canbe used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017;151:342-50)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionallyevaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in theanterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial baseswith growth were evaluated by using the previously selected landmarks.Methods:Cone-beam computed to-mography images of 10 dry skulls were used to identify useful landmarks from different areas of the anteriorand middle cranial bases based on their reliability and accuracy. These selected landmarks were identified inthe images of an already available sample of adolescents (n560) taken at 2 time points (19 months apart)to assess dimensional changes with growth.Results:The majority of the proposed 3-dimensional landmarkswith the exception of the lesser wing of the sphenoid showed acceptable intrarater and interrater reliabilities.The distances measured between foramina and canals in the transverse dimension showed evidence ofincreases in size. However, the mean amounts of increase in these transverse distances were equal to orless than 1.05 mm (from 1.1% to 4.1%). No change was observed between the right and left anterior andposterior clinoid processes. The vertical dimensions showed evidence of some changes, but these werewithin 2% of the original distances.Conclusions:In this adolescent sample, minor growth-related changeswere observed in the anterior and middle cranial bases. The midsagittal area of the anterior cranial base(foramen caecum to presphenoid) was stable. The right and left anterior and posterior clinoid processes canbe used for transverse superimposition. (Am J Orthod Dentofacial Orthop 2017;151:342-50)
Currie, Kris; Sawchuk, Dena; Saltaji, Humam; Oh, Heesoo; Flores-Mirand, Carlos; Lagravère-Vich, Manuel O.
Posterior cranial base natural growth and development: A systematic review Journal Article
In: Angle Orthodontist, no. 87, pp. 897–910, 2017.
@article{Currie2017,
title = {Posterior cranial base natural growth and development: A systematic review},
author = {Kris Currie and Dena Sawchuk and Humam Saltaji and Heesoo Oh and Carlos Flores-Mirand and Manuel O. Lagravère-Vich},
url = {http://162.214.24.32/~crilorg/wp-content/uploads/2018/11/Posterior-cranial-base-natural-growth-and-development-A-systematic-review.pdf},
year = {2017},
date = {2017-01-01},
journal = {Angle Orthodontist},
number = {87},
pages = {897–910},
abstract = {Objective: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).
Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-
searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in
duplicate. A meta-analysis was not justified.
Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample
sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence.
Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Objective: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba).
Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-
searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in
duplicate. A meta-analysis was not justified.
Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample
sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence.
Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.)
Materials and Methods: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-
searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in
duplicate. A meta-analysis was not justified.
Results: Finally, 23 published studies were selected: 5 cross-sectional and 18 cohort studies. Articles were published between 1955 and 2015, and all were published in English. The sample
sizes varied between 20 and 397 individuals and consisted of craniofacial measurements from either living or deceased human skulls. Validity of the measurements was not determined in any of the studies, while six papers reported some form of reliability assessment. All the articles included multiple time points within the same population or data from multiple age groups. Growth of S-Ba was generally agreed to be from spheno-occipital synchondrosis growth. Basion displaced downward and backward and sella turcica moved downward and backward during craniofacial growth. Timing of cessation of S-Ba growth was not conclusive due to limited identified evidence.
Conclusions: Current evidence suggests that S-Ba is not totally stable, as its dimensions change throughout craniofacial growth and a minor dimensional change is observed even in late adulthood. (Angle Orthod. 2017;87:897–910.)
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