Comparative study on the angulation of mandibular canines due to dentoalveolar compensation as assessed on an orthopantomogram

Abstract

Introduction: This study was carried out to determine and compare the mesio-distal angulation of mandibular canine crowns in individuals with skeletal and dental Class I, Class II and Class III malocclusions.
Material and Methods: A total of 120 patients were chosen as a sample with 70 females and 50 males. Lateral cephalograms and clinical pictures of patients were used to classify them into three groups i.e. Class I, Class II and Class III malocclusion groups. Orthopantomograms (OPG) were used to measure right and left mandibular canine angulations. The data was then analyzed using SPSS version 16.0. The inclusion criteria comprised of patients with complete permanent dentition, no previous orthodontic treatment and the same skeletal and dental malocclusion.
Results: “One Way Analysis†showed mean canine angulation for Class I as 70.938, for Class II as 69.600 and for Class III as 69.725. Significance level comparison between the three groups, made via Tukey HSD test, was set at P ≤ 0.05. Significance level between Class I and II was 0.657, between Class I and III, 0.708 and between Class II and III, 0.996. These values stood insignificant. ANOVA test was applied to assess the overall significance level of the study, which showed insignificance as well.
Conclusions: Results of our study showed insignificant comparisons among mandibular canine angulations for all three groups of malocclusion.