Yang Li-Li, Peng Ping, Lin Yun-Hong, Zhou Ting, Ren Xiao-Xue, Wang Wei-Qi, Li Xing-Xing
Department of Dental Research, The Affiliated Stomatological Hospital of Kunming Medical University, Kunming, Yunnan, 650100, People's Republic of China.
Department of Periodontics, The Affiliated Stomatological Hospital of Kunming Medical University, Kunming, Yunnan, 650100, People's Republic of China.
Clin Cosmet Investig Dermatol. 2021 Mar 23;14:285-290. doi: 10.2147/CCID.S295149. eCollection 2021.
This study aims to measure and analyze the lip and tooth dynamic esthetic characteristics at rest and during speech in order to provide a reference for its esthetic design and restoration among the Hani and Han populations in Yunnan Province, China.
Subjects of Hani and Han ethnicity in Yunnan were selected using multistage stratified sampling and inclusive criteria. The lip and tooth dynamic esthetic characteristics of the subjects at rest and during the pinyin pronunciation of "me", "yi", "fu", and "si" were recorded using digital photography and analyzed with computer software.
No statistical difference was detected between the Hani and Han groups in the upper central-incisor display, when pronouncing the pinyin "yi". Furthermore, there were no statistical differences in lip dynamic esthetic parameters between the Hani and Han groups, except for the distance between the upper and lower lips when pronouncing "si". There were three kinds of correlation between the upper central-incisor edge and lower lip: separation, contact, and overlap.
The display of upper central incisors and the mouth width of Hani people are larger than those of Han people when at rest. When the pinyin "si" is pronounced, the display of upper central incisors and the upper-lower lip distance of Hani people is less than that of Han people due to labial muscle movement.
本研究旨在测量和分析静息状态及说话时唇部和牙齿的动态美学特征，为中国云南省哈尼族和汉族人群的美学设计与修复提供参考。
采用多阶段分层抽样和纳入标准选取云南省哈尼族和汉族受试者。使用数码摄影记录受试者静息状态及发“me”“yi”“fu”“si”拼音时的唇部和牙齿动态美学特征，并采用计算机软件进行分析。
发拼音“yi”时，哈尼族和汉族在上颌中切牙显露方面未检测到统计学差异。此外，除发“si”时上下唇间距外，哈尼族和汉族在唇部动态美学参数方面无统计学差异。上颌中切牙切缘与下唇之间存在分离、接触和重叠三种关系。
静息状态时，哈尼族上颌中切牙显露度及口裂宽度大于汉族。发拼音“si”时，由于唇部肌肉运动，哈尼族上颌中切牙显露度及上下唇间距小于汉族。
