Comparison of treatment outcome and stability of the results between selective alveolar decortication and traditional orthodontic treatment
Date
2008
DOI
Authors
Ohara, Paula
Version
OA Version
Citation
Abstract
Orthodontic treatment and retention outcomes depend upon the severity of the initial malocclusion and the type of retention used. The American Board of Orthodontics developed the Discrepancy Index (DI) as a measure of pre-treatment malocclusion severity and the Objective Grading System (OGS) to assess orthodontic treatment and retention outcomes. Selective alveolar decortication plus grafting (PAOO[tm]) has been shown to yield 3 to 4 times more rapid active treatment and more stable retention outcomes. The objective of this study is to compare non-extraction orthodontic treatment and retention outcomes, with and without PAOO[tm] and fixed retainers. A retrospective study was designed to compare 30 patients who underwent selective alveolar decortication with Drs. TM Wilcko and WM Wilcko in their private practices in Erie, Pennsylvania to 76 subjects who received traditional orthodontics completed by graduate orthodontic residents at the University of Oklahoma, School of Dentistry in Oklahoma City, Oklahoma. The traditional treatment group was divided into 2 groups: (1) those who received removable retainers and (2) those who received fixed retainers. All cases treated with corticotomy received removable retainers. Pre-treatment patient records (T0) were screened for DI scores to evaluate case difficulty and post-treatment records taken at the time of debonding (Tl), and 1 year after (T2), were assessed for the OGS. Results indicated that the corticotomy sample had treatment times 2/3 to 3/4 shorter than the traditional treatment sample (p[less than]0.001). Pre-treatment DI score results indicated that the traditional cases were slightly more complex than those in the corticotomy group. Post-treatment OGS scores immediately after debanding (Tl) revealed that the corticotomy cases had in average better finishes than the traditional cases (p=0.047). Records of one year after debanding (T2), however, indicate that there was no statistically significant difference for total OGS scores between the 3 groups, even though the corticotomy group showed to be more stable than both removable and fixed retainer groups for alignment of the mandibular anterior area (p=0.02). Further studies will be required to address limitations of the current study, especially the lack of long-term data, in order to effectively evaluate stability of treatment outcomes.
Description
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Thesis (MSD)--Boston University, Goldman School of Dental Medicine, 2008 (Dept. of Orthodontics).
Includes bibliography: leaves 54-57.
Thesis (MSD)--Boston University, Goldman School of Dental Medicine, 2008 (Dept. of Orthodontics).
Includes bibliography: leaves 54-57.
License
This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.