性别对埃及人群上颌前牙宽长比的影响及牙齿尺寸与牙龈显示美学可接受比的建立

bishoy maher botross, Omaima Elmahallawi, Azza mohamed Ezz El-Arab
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引用次数: 0

摘要

目的:本研究的目的是在埃及人口的样本上颌前牙的性别和宽长比之间的相关性,并获得一个最佳的审美接受的牙齿尺寸比牙龈显示。材料和方法:从100名成年埃及参与者的不可逆水胶体印象中浇注石头铸件。这些模型用于测量每颗上颌前牙的最大近远端宽度、最大冠长和宽长比。此外,为每位参与者拍摄两张正面照片,测量可见前牙的宽度、长度和宽/长比。最后,选取一组具有粘性微笑的样本,对原始图像的牙龈显示进行数字处理,生成5张不同牙龈显示的图像,然后由50名牙医和50名外行人使用数值评定量表对这些图像进行评估。结果:两组患者侧切牙与犬齿的各牙宽值及W/L比差异均有统计学意义。除了牙龈显示-4 mm外,牙医和外行人对微笑的感知无显著差异。结论:性别影响侧切牙和犬齿实际牙宽值以及实际和表观W/L比。外行人认为0毫米和-2mm的牙龈显示最吸引人,牙医则认为0毫米的牙龈显示最吸引人,而所有参与者都认为4毫米的牙龈显示最不吸引人。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Efficacy of gender on the width-length ratio of maxillary anterior teeth in an Egyptian population and establishment of a guideline for esthetical accepted ratio of teeth dimensions to gingival display
Aim: The present study aims to correlate between gender and width-length ratio of maxillary anterior teeth in a sample of Egyptian population and to obtain an optimal esthetical accepted ratio of teeth dimensions to gingival display. Materials and Method: Stone casts were poured from irreversible hydrocolloid impressions of 100 adult Egyptian participants. These casts were used to measure the maximum mesiodistal width, maximum crown length and the width/length ratio for each maxillary anterior tooth. In addition, two frontal photographs were taken for each participant and the visible anterior teeth width, length and width/length ratio were measured. Finally, a sample with gummy smile was selected and the gingival display of the original image was digitally manipulated to create a series of five images with different gingival displays, then these images were subjected to assessment by 50 dentists and 50 laypersons using a numerical rating scale. Results: There was statistically significant difference between female and male group for all teeth width values and W/L ratio of lateral incisor and canine. There was no significant difference between dentists and laypersons perception except for the smile with -4 mm gingival display. Conclusion: Gender affects actual teeth width values as well as actual and apparent W/L ratios of lateral incisor and canine. Laypersons considered 0mm and -2mm gingival display the most attractive situation, on the other hand dentists considered 0 mm gingival display the most attractive one, while all participants agreed that 4mm gingival display is the least attractive one.
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