Comparative Analysis of Dynamic Esthetic Characteristics in Spontaneous Smiles Among Hani and Han Youths in Yunnan Province, China
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View abstract on PubMed
Summary
This summary is machine-generated.Dynamic smile aesthetics in Hani and Han youths show similarities, but sex-based differences in lip and gingival display were noted. This research highlights ethnic and gender variations in facial characteristics during spontaneous smiles.
Area Of Science
- Orthodontics and Dentofacial Orthopedics
- Anthropology
- Facial Aesthetics
Background
- Understanding ethnic variations in facial aesthetics is crucial for personalized dental and orthodontic treatments.
- Spontaneous smiles reveal dynamic characteristics that differ from posed smiles.
- Previous research has not extensively detailed the dynamic smile aesthetics of Hani and Han ethnic groups in Yunnan Province.
Purpose Of The Study
- To investigate and compare the dynamic esthetic characteristics of spontaneous smiles in Hani and Han youths.
- To identify potential ethnic and sex-based differences in smile aesthetics.
Main Methods
- A multistage stratified cluster random sampling method was used to recruit Hani and Han youths from Yunnan Province.
- Digital videography captured facial characteristics at rest and during spontaneous smiles.
- Image measurement software analyzed dynamic esthetic parameters of lips, teeth, and gingiva.
Main Results
- Maxillary incisor exposure was more pronounced than lateral incisors and canines in both groups.
- Significant differences in gingival display of central incisors were found between males of the two ethnicities.
- Mouth corner mobility varied by sex and ethnicity, with Han males showing greater mobility and Hani females wider mouth corners during smiles.
- Gingival line display predominantly showed unexposed types in males and parallel types in females; smile arcs were generally parallel and straight.
Conclusions
- Dynamic smile esthetics share common traits between Hani and Han youth in Yunnan Province.
- Significant sex-based differences in specific dynamic smile esthetic features were observed.
- Findings contribute to understanding ethnic and sexual dimorphism in facial aesthetics.
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