ISSN 2717-7394

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Abstract


A COMPARISON OF CLASS II DIVISION 2 TREATMENTS WITH ADJUSTABLE AND CONNECTICUT INTRUSION ARCHES
Aim: The aim of the study is to compare the results of Class II division 2 (Class II/2) treatments with the Adjustable intrusion arch (AIA) and Connecticut intrusion arch (CIA). Method: 24 subjects were included in this study. The AIA group had 12 patients, and the CIA group also had 12 patients. The treatment plan involved the maxillary incisor intrusion and extraction of the first maxillary premolars. The measurements were obtained on Pre- (T1) and post- (T2) treatment lateral cephalometric films. For the intra-group comparisons, a paired t-test was used for data indicated normal distribution, while a Wilcoxon Signed test was used for data nonindicated normal distribution. For inter-groups, the average treatment changes were compared by using independent t-test for data indicated normal distribution and the Mann-Whitney U-test for data nonindicated normal distribution. Results: In the AIA and CIA groups, there were statistically significant differences between the T1 and T2 stages for maxillary incisor protrusion and reduction in overbite. Other than the distance between the center of maxillary 6 and the vertical reference plane (Mx6cr–VRP), there were no statistically significant differences between the groups. Conclusion: According to the results of this study, AIA and CIA produced similar effects in Class II/2 treatment.

Keywords
Adjustable Intrusion Arch, Connecticut Intrusion Arch, Class II Division 2 Treatment



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