Study Overview

Study 1001 - View Inventory
Brief Description
The overall aim of Study 1001 (Dugoni) is to study the manner in which orthodontists use information from physical records to make clinical judgments specifically in the design of treatment plans and the evaluation of treatment outcome. Although the data set we are acquiring can be used for many investigative purposes, we wish for the present to focus on three important problems in the relationship between quantitative and non-mensurational analysis of clinical records.
Read Full Description	From Acquisition Group(s): dugoni
Study 1030 - View Inventory
Brief Description
This study documents the rationale and treatment outcomes for three different paths of treatment in a random sample of patients who had received orthodontic care by Dr. Steven Dugoni, primary instructor in the Mixed Dentition Clinic of the Department of Orthodontics at the University of the Pacific. The sample was retrospectively drawn from the collection of records for all children who had first presented for orthodontic evaluation at Dr. Dugoni’s practice between their seventh and eleventh birthdays. It includes patients for whom early treatment was deemed inappropriate and for whom orthodontic intervention was deferred until the eruption of the second molars (designated Treatment Type [ttype] 1), patients who were treated in the mixed dentition and for whom no further intervention was considered necessary (ttype 2.1), and patients who were treated in the mixed dentition and for whom a further phase of treatment was considered appropriate (ttype 2.2). This study is the first attempt at CRIL to quantify and display information from all the standard physical records that orthodontists conventionally use in orthodontic diagnosis, treatment planning, and treatment evaluation. These include lateral cephalograms, periapical and panoramic dental x-ray images, study casts, and facial photographs at the beginning and end of each phase of treatment. Written treatment records documenting the course of treatment are also being reproduced and analyzed. Consistent with the protection of patient confidentiality, it is our intention to share all information from all these sources on this site.
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Study 7901 - View Inventory
Brief Description
TO be provided
Read Full Description	From Acquisition Group(s): mathewsProjected
Study 8101 - View Inventory
Brief Description
The earliest investigations using the records of the Mathews acquisition group were conducted prior to the beginning of Study 8101. These investigations were carried out by Dr. Mathews himself with the assistance of his student and colleague Dr. George S. Payne between 1975 and 1980. These studies were primarily directed toward the investigation of variability of eruption patterns in the transformation between the mixed dentition and the permanent dentition. It was the intent of the investigators to integrate informationfrom the x-ray cephalograms with longitudinal information from a collateral set of study casts generated at corresponding time points. Data acquisition for Study 8101 was commenced at our Lab in 1981 with the participation of Drs. James T. Rogers and Dr. Yocheved BenBassat. The major thrust of Study 8101 was the systematic examination of the differences in perceived displacement of molar and incisor teeth on the lateral cephalograms as a function of the differences in the technique for superimposing lateral cephalograms generated at different timepoints.
Read Full Description	From Acquisition Group(s): mathews
Study 8807 - View Inventory
Brief Description
The data for Study 8807 were acquired from the records of the Boero Acquisition Group. They include coordinate data from lateral cephalograms supplemented by additional coordinate data from intra-oral bitewing and periapical x-ray images. The information was encoded from analog originals using computer assisted techniques developed at CRIL. All subjects had received full banded orthodontic treatment using the Edgewise appliance. The early records-acquisition and data-acquisition parts of this study were conducted in the Division of Orthodontics of the University of California, San Francisco as part of the retrospective component of the NIDR sponsored project RO1-DE08713, Adult Orthodontic Therapy: Extraction vs. Non-Extraction (P.I.-Baumrind) conducted jointly by UCSF and the University of the Pacific graduate orthodontic faculties.
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Study 9204 - View Inventory
Brief Description
The data for Study 9204 were acquired from the physical records of the Gibbs Acquisition Group. The sample is a stratified random sub-set of the Gibbs Acquisition Group that included 12 Class I extraction subjects, 12 Class I non-extraction subjects, 12 Class II extraction subjects, and 12 Class II non-extraction subjects. All patients were adolescents who had received full banded orthodontic treatment using the Edgewise Appliance. The primary aims of the study were a) to analyze the manner in which skilled clinicians use information from orthodontic records to make treatment decisions and to evaluate treatment outcomes, and b) to begin an assessment of the correspondence between conventional angular and linear measurements made on lateral cephalograms, and rank-ordered assessments of physical records made by skilled clinicians without actual physical measurement.
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Study 9401 - View Inventory
Brief Description
The Hixon/Oregon study consists of lateral cephalometric records and data for a sample of orthodontically treated patients with maxillary and mandibular implants of the Bjork type. Implants were placed and treatment was performed in the graduate orthodontic clinic of the University of Oregon School of Dentistry under the mentorship of Dr. Ernest H. Hixon starting in the year 1966. Records collection continued until 1972 under the supervision of Dr. Douglas L. Buck. To our knowledge, this is the only currently available collection of cephalometric records for treated patients with implants of the Bjork type, except for the treated subjects in the Mathews acquisition group.
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Study 9603 - View Inventory
Brief Description
This project was originally intended to address two important issues in the relationship between clinical treatment and clinical research findings in orthodontics. The sample set of records to be examined was drawn retrospectively from the practice of a single clinician who is university educated and trained, has practiced orthodontics for more than 35 years, is a Diplomate of the American Board of Orthodontics, and is a senior member of the clinical instruction staff at UMDNJ. All patients who had enrolled for treatment during a stipulated five-year period were assigned random numbers and were examined for adequacy of records. For the purposes of this study, subjects were considered satisfactory for inclusion in the final sample if their charts included the following records at both the beginning and the end of treatment. a. Lateral cephalogram b. Upper and lower study casts c. Panoramic x-ray d. Facial photographs (profile, frontal, and frontal smiling). The primary intentions of the study were to examine the concordance/discordance 1. among different skilled clinician-judges, and 2. between subjective (i.e., non-quantitative) and objective (i.e., measured) for typical parameters used by orthodontists in planning treatment and in evaluating treatment outcome.
Read Full Description	From Acquisition Group(s): pearson