Measurement and analysis of smile line of 62 Han-Chinese
10.3760/cma.j.issn.1002-0098.2011.11.005
- VernacularTitle:62名中国汉族青年笑线水平的测量研究
- Author:
Xiu-Lian HU
1
;
Heberer SUSANNE
;
Nelso KATJA
;
Ye LIN
Author Information
1. 北京大学口腔医学院口腔医院
- Keywords:
Smilling;
Esthetics,dental;
Dentures
- From:
Chinese Journal of Stomatology
2011;46(11):660-664
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze smile features in maximum lip-dynamic in Chinese.Methods Sixty-two Han-Chinese,travelling in Germany,with a mean age of 28.5 years were enrolled and photographed.Standardized digital photos were made to measure the height of displayed maxillary gingiva,papiLla and tooth during an enjoyment smile.Statistical analysis was performed using Mann-Whitney-U Test and non-parametric analysis.Results The mean height of tooth display for the central incisors was 10 mm,with no significant difference between the gender ( P ＞ 0.05 ).The mean height of gingival display was 1.3 mm and the mean papilla height was 3.4 mm.There was no significant difference between the genders (P＞0.05).31％ (19/62) of the subjects belonged to high smile line type,50％ (31/62) to medium smile line type and 19％ (12/62) to low smile line type.Conclusions The red esthetics is a paramount factor for Chinese men and women in the esthetic restoration.81％ of the Chinese studied showed various degree of gingival exposure from central incisor to the premolars,which defined the esthetic area for Chinese people.Papilla is a critical parameter for esthetic evaluation and treatment design.The ratio of high smile line in Chinese may be higher than that in Caucasian.
