Frontal facial proportions of 12-year-old southern Chinese: a photogrammetric study

Head & Face Medicine

Yanqi Yang³  John Lo¹  Erik Urban Oskar Hägg³  Ricky Wing Kit Wong³  Colman Patrick McGrath²  Charles Yat Cheong Yeung³ 

[1] Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China;Department of Periodontology and Public Health, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China;Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China

关键词: Cosmetic surgery;    Plastic surgery;    Orthognathic surgery;    Orthodontics;    Treatment outcome evaluation;    Diagnosis;    Facial attractiveness;    Population norm;    Photogrammetry;    Southern Chinese;    Facial proportions;   

Others  :  1224158
DOI  :  10.1186/s13005-015-0084-7

 received in 2015-03-13, accepted in 2015-07-29,  发布年份 2015

【 摘 要 】

This study aimed to establish norm values for facial proportion indices among 12-year-old southern Chinese children, to determine lower facial proportion, and to identify gender differences in facial proportions.

A random population sample of 514 children was recruited. Fifteen facial landmarks were plotted with ImageJ (V1.45) on standardized photos and 22 Facial proportion index values were obtained. Gender differences were analyzed by 2-sample t-test with 95 % confidence interval. Repeated measurements were conducted on approximately 10 % of the cases.

The rate of adopted subjects was 52.5 % (270/514). Intraclass correlation coefficient values (ICC) for intra- examiner reliability were >0.87. Population facial proportion index values were derived. Gender differences in 11 of the facial proportion indices were evident (P < 0.05).

Upper face-face height (N- Sto/ N- Gn), vermilion height (Ls-Sto/Sto-Li), upper face height-biocular width (N-Sto/ExR-ExL) and nose -face height (N-Sn/N-Gn) indices were found to be larger among girls (P < 0.01). Males had larger lower face-face height (Sn -Gn/ N-Gn), mandibulo-face height (Sto-Gn/N-Gn), mandibulo-upper face height (Sto-Gn/N-Sto), nasal (AlR-AlL/N-Sn), upper lip height-mouth width (Sn-Sto/ChR-ChL), upper lip-upper face height (Sn-Sto/N-Sto) and upper lip-nose height (Sn-Sto/N-Sn) indices (P < 0.05).

Population norm of facial proportion indices for 12-year-old Southern Chinese were derived and mean lower facial proportion were obtained. Sexual dimorphism is apparent.

【 授权许可】

   
2015 Yeung et al.

【 图 表 】

Fig. 1.

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