A Comparison of Arch Length, Intercanine Width, Intermolar Width, and Interalveolar Width in Patients With Angle's...

Background and objective Palatal depth is significant as it impacts the intra-arch dimensions in patients with Angle's Class II Division 1 malocclusion. Hence, understanding this relationship is crucial for developing targeted orthodontic treatment plans, to optimize dental alignment and overall facial aesthetics. This study aimed to compare the arch length, intercanine width, intermolar width, and interalveolar width in patients with Class II Division 1 malocclusion with deep palates and those with shallow palates. Methods The study involved 88 patients aged 18-30 years, categorized into two groups based on palatal depth: Group A (deep palates) and Group B (shallow palates). Measurements were taken for arch length, intercanine width, intermolar width, and interalveolar width. An independent samples t-test was used to compare these measurements between the groups, with statistical significance set at p<0.05. Results The analysis revealed significant differences in intermolar and interalveolar widths between the two groups. Group B, with shallow palates, showed larger intermolar and interalveolar widths compared to Group A, with deep palates (p = 0.001 and p = 0.017, respectively). However, no significant differences were observed in arch length and intercanine width between the groups. Conclusions Our findings suggest that palatal depth is significantly associated with certain intra-arch transverse dimensions, particularly intermolar and interalveolar widths. These differences underline the importance of considering palatal morphology in the orthodontic treatment of patients with Class II Division 1 malocclusion.