Preliminary study on analysis method of spontaneous smile and application.
- Author:
Yan-ling ZHANG
1
;
Hao ZHANG
;
Wen-jie HU
;
Zhan-qiang CAO
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Analysis of Variance; Asian Continental Ancestry Group; Cephalometry; methods; Esthetics, Dental; Female; Gingiva; anatomy & histology; Humans; Image Processing, Computer-Assisted; methods; Incisor; anatomy & histology; Lip; anatomy & histology; Smiling; Young Adult
- From: Chinese Journal of Stomatology 2012;47(3):169-172
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the smile esthetic elements of Chinese Han-nationality female based on high definition (HD) digital camera with computer-image measuring technique.
METHODSHD digital camera was used to capture spontaneous smile process combined with computer-image measuring technique to establish the analysis method of smile. Ninety-nine Han-nationality female with normal gingiva, aged from 20 to 30 years were recruited. The lip-incisor edge distance, gingival display were measured. The data was statistically analyzed.
RESULTSA standard and objective method to analyze spontaneous smile was established. Forty-three percent (43/99) of the subjects studied were classified as having a high smile and average smile respectively, 13% (13/99) as having a low smile. Gingival display accounted for (1.34 ± 0.98) mm in high smile type.
CONCLUSIONSAverage smile and high smile type were most common in the Chinese Han-nationality female studied.
