Lower Incisor Inclination and Symphysis Dimensions in Different Skeletal Patterns

Objectives: To compare lower incisor inclination and symphysis morphology in Class I, II & III malocclusion individuals. Materials and Methods: In 120 lateral cephalometric images of adults lacking previous orthodontic management, heights of the mandibular symphysis (LH), buccal (LA) & lingual (LP) cortex, as well as inclination, were all measured. Additionally, malocclusion types (Class I, II, & III) were considered. The independent t-test was utilized to evaluate differences in lower incisor location and symphysis dimensions. A p-value < 0.05 was considered as significant. Data analysis was done using SPSS-26. Results: The sagittal malocclusion groups differed significantly in terms of Incisor Mandibular Plane Angle (IMPA) and symphysis size. Because the lower incisor apex in Class III individuals was near the buccal cortex, the value of LA was lower & LH was higher. Because the lower incisor apex of Class II individuals was close to the lingual cortex, their LP value decreased, and their LH value increased. Conclusion: The sagittal malocclusion groups differed significantly in terms of IMPA and symphysis size. Because the lower incisor apex in Class III individuals was near to buccal cortex, the value of LA was lower & LPwas higher. Because the lower incisor apex of Class II patients was close to the lingual cortex, their LP value decreased, and their LH value increased.