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Abstract

The mandibular symphysis is a crucial anatomical structure influencing facial aesthetics and harmony. Its morphology is pivotal in determining optimal lower incisor positioning, especially in borderline orthodontic cases requiring meticulous treatment planning. Objective: To determine and compare symphyseal dimensions in different vertical patterns of skeletal class I cases. Methods: The study was designed as a cross-sectional study. Data was analyzed using SPSS 25, with mean and standard deviations used for quantitative variables and frequency and proportions for qualitative data. Statistical significance was assessed using chi-square tests for gender and ANOVA for symphysis height and vertical facial patterns, with a P-value ≤0.05 considered significant. Results: Male subjects with Hypodivergent (↓D), Normodivergent (ND)and Hyperdivergent (↑D) profiles showed no statistically significant difference in Id-Me, whereas female subjects showed statistically significant difference in Id-Me between (↓D) and (↑D) subjects. Additionally, a notable sex difference was observed in Id-Me, with significant variations between males and females. In contrast, the differences in LI between males and females were found to be statistically non-significant (P > 0.05). Conclusion: This article reflected that males show longer chin than females.