Effect of anterior overbite malocclusion on smile esthetics in adult patients

Johnson Hsin Chung Cheng, Tracy Yi Hsuan Lee, Pei Chin Cheng, Daniel De Shing Chen

研究成果: 雜誌貢獻文章同行評審


Objective: To investigate whether overbite affects smile esthetics. Methods: This study involved 106 patients with complete pretreatment records. Lateral cephalometric tracings were used to measure hard tissue variables. Frontal smile and upper occlusal photographs were used to measure nine smile esthetic variables: arc ratio, number of teeth, upper incisor exposure, upper midline, buccal corridor ratio, smile index, archform index, lower teeth exposure, and interlabial gap. The patients were classified into three groups according to their overbites (B1: 0–4 mm, B2: >4 mm, and B3: <0 mm). Analysis of variance was performed to compare 14 cephalometric measurements and the 9 smile esthetic variables. Multiple linear regression analysis was performed to determine the influencing cephalometric factors. Results: Only upper incisor exposure was significantly different among the groups. In the multiple linear regression analysis, upper incisor exposure was positively associated with the distance from the upper incisor to the palatal plane in Group B2. No significant correlations were observed between cephalometric measurements and smile variables in Groups B1 and B3. Conclusions: Smile variables were not significantly different among patients with various overbite malocclusions with the exception of upper incisor exposure. Overbite malocclusions do not appear to influence smile esthetics in adult patients.
頁(從 - 到)3000605211039578
期刊Journal of International Medical Research
出版狀態已發佈 - 9月 2021

ASJC Scopus subject areas

  • 生物化學
  • 生物化學(醫學)
  • 細胞生物學


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