Some factors related to gummy smile among students of Vietnam Maritime University, school year 2024 - 2025

Gummy smile is one of the complaints of the patients, since such a situation can influence confidence and social relationships. Objective: This study aims to describe some related-factor to gummy smile of students at Viet Nam Maritime University and its related factors. Methods: A cross – sectional study was conduct on 355 students at Viet Nam Maritime University. Results and conclusions: Gummy smile which caused of vertical maxillary excess was most common. There is a strong positive correlation between gummy smile and incisor exposure in resting position and a weak positive correlation between gummy smile and upper lip mobility. Gummy smile has a positive correlation with bite plane angle and maxillary height angle at a moderate level; negatively correlated with facial convexity angle and Jarabak ratio at a moderate level; has a weak positive correlation with ANB angle.