Effect of smile esthetics on the quality of life in a Han Chinese population

Abstract

Objective This study aimed to explore the influence of smile esthetics on the quality of life in a Han Chinese population. Methods A total of 110 Han Chinese volunteers (52 males and 58 females, mean age 26.7 years) were recruited, and frontal images of their smiles were collected. A photoediting program was used to evaluate the following components of smile esthetics: the buccal corridor ratios, the angle between the interpupillary and commissural lines, the number of visible teeth, and width‐to‐length ratios of the maxillary central incisors. Oral health‐related quality of life (OHRQoL) in these volunteers was evaluated using the Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) and Oral Health Impact Profile‐14 (OHIP‐14). Statistical analyses were performed by using Pearson's correlations and multiple linear regression (α = 0.05). Results Compared to males, females scored higher on psychological impact (p = 0.017). Moreover, the number of visible teeth had a significant effect on social impact, psychological impact and esthetic concern (all p < 0.05). However, the buccal corridor ratios, the angle between the interpupillary and commissural lines, and the width‐to‐length ratios of the maxillary central incisor did not correlate with the OHRQoL (all p > 0.05). Conclusions The number of visible teeth significantly influenced the quality of life in a Han Chinese population. Smile esthetics had a significantly greater psychological impact on females than males. Clinical Significance This study highlights the effects of smile esthetics on the quality of life in a Han Chinese population. Female patients may raise more esthetic concerns in clinical practice.

Correlation Between Maxillary Anterior Teeth and Common Facial Measurements

“…47 Among Chinese population, wider maxillary incisors and canines were recorded, which is not in parallel with this study findings. 48 The width of the left canine and the right and left central incisors of the male subjects recruited in this study were significantly correlated with the IPD. Meanwhile, the IPD of the female subjects was significantly correlated with the width of the right central incisor, the right and left lateral incisors, and the left central incisor but poorly correlated with the central incisor.…”