Effects of Case Western Reserve University’s transverse analysis on the quality of orthodontic treatment


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Abstract

IntroductionThe purpose of this study was to evaluate the effect of using the transverse analysis developed at Case Western Reserve University (CWRU) in Cleveland, Ohio. The hypotheses were based on the following: (1) Does following CWRU’s transverse analysis improve the orthodontic results? (2) Does following CWRU’s transverse analysis minimize the active treatment duration?MethodsA retrospective cohort research study was conducted on a randomly selected sample of 100 subjects. The sample had CWRU’s analysis performed retrospectively, and the sample was divided according to whether the subjects followed what CWRU’s transverse analysis would have suggested. The American Board of Orthodontics discrepancy index was used to assess the pretreatment records, and quality of the result was evaluated using the American Board of Orthodontics cast/radiograph evaluation. The Mann-Whitney test was used for the comparison.ResultsCWRU’s transverse analysis significantly improved the total cast/radiograph evaluation scores (P = 0.041), especially the buccolingual inclination component (P = 0.001). However, it did not significantly affect treatment duration (P = 0.106).ConclusionsCWRU’s transverse analysis significantly improves the orthodontic results but does not have significant effects on treatment duration.HighlightsUsing the transverse analysis will result in higher-quality results.The transverse analysis is reliable.To ignore the transverse dimension may affect the quality of the results.

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