ẢNH HƯỞNG TƯ THẾ CẰM VÀ ĐỘ LỆCH TRỤC RĂNG CỬA HÀM TRÊN LÊN CẢM NHẬN THẨM MỸ Ở NGƯỜI TRƯỞNG THÀNH TRẺ TUỔI VÀ TRUNG NIÊN

Abstract

Objective: To determine the influence of chin position and maxillary incisor inclination according to young adult and middle-aged groups at Vietnam National University, Hanoi in 2025. Subject and methods: Cross-sectional descriptive study using an online survey with pre-prepared images and VAS (0-10) scoring with ordinal ranking variables conducted on 196 participants, including 129 young adults aged 18-25 years and 67 middle-aged adults aged 44-49 years. Results: Across both groups, no statistically significant differences were observed among chin positions, except for the neutral position in Group 2, where VAS scores were higher in males than in females (p<0,05). Overall, most values showed no gender-related differences. However at the neutral chin position, males scored higher than females at +10ND in Group 1 and -10ND in Group 2. In the posterior divergent chin position, males also demonstrated higher VAS scores than females at -10PD, -5PD, and +10PD in Group 1 (p<0,05). Conclusions: Both chin position and maxillary incisor inclination influence the aesthetic perception of the smile and facial profile. In most conditions, no significant differences were observed between genders; however females tended to be more critical than males among young adults. Middle-aged individuals demonstrated stricter aesthetic perceptions in both genders compared with young adults. Therefore, age- and gender-related factors should be carefully considered when designing smile and facial aesthetics in clinical practice.