口腔医师与非专业人士对上颌中切牙美学变化敏感性的比较(1)
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[摘要]目的：比较口腔医师与非口腔专业人士对上中切牙美学变化的敏感性。方法：对不同照片的上中切牙位置进行微小渐进性的改变，包括中颌切牙倾斜角度、冠长、上颌中切牙楔状隙暴露量，通过问卷，对口腔医师和非专业人士进行调查，从而判断两种人对上颌中切牙美学敏感性。结果：口腔医师组评判明显不美观的相关参数平均范围约为：单侧上中切牙倾斜5°以上，双侧5°以上；冠长增加0.5mm以上、缩短0.5mm以上；楔状隙暴露2mm以上。非专业组则分别为单侧倾斜7.5°以上，双侧7.5°以上;冠长增加0.5mm以上、缩短1mm；楔状隙暴露3mm以上。口腔医师组能辨别变化差异值为：上中切牙倾斜2.5°；冠长增加0.5mm，冠长减少0.5mm；楔状隙暴露1mm；非专业组可辨别上中切牙倾斜5°，冠长增加0.5mm，冠长缩短0.5mm及楔状隙暴露2mm的差异。对于牙冠冠长变化，两组敏感性没有显著性差异；其余参数两组都有显著差异。结论：口腔医师与非专业人士对上中切牙美学敏感性有明显差异，应该在治疗中给患者提出更多建议。
[关键词]上颌中切牙；美学；敏感性
[中图分类号]R783 [文献标识码]A [文章编号]1008-6455(2011)02-0285-04
Comparing the perception of Dentists and lay people to altered Dental Esthetics
XU Zhi-peng1,CHEN Guang2,ZOU Min1,BAO Qing-hong1,ZHOU Hong1
(1.Department of Orthodontics,Stomatological Hospital,College of Medicine,Xi'an Jiaotong University,Xi'an 710004,Shaanxi,China;2.Department of Stomatological,Xi'an Hospital of Railroad)
Abstract:ObjectiveThe purpose of this study was to determine the prevalence of lay people and dental professionals with respect to minor variations in anterior tooth.MethodsSmiling photographs were intentionally altered with one of five common anterior esthetic discrepancies in varying degrees of deviation including crown length,incisor crown angulation, and open gingival embrasure.The images were randomized in a questionnaire and rated according to attractiveness by two groups:dentists and lay people.ResultsAverage values of Dentist group which they evaluate unattractively:Unilateral maxillary anterior tooth of 5 degrees, 5 degrees bilaterally;crown length increased more than 0.5mm or 0.5mm shorter; open gingival embrasure more than 2mm.Average values of lay people group were 7.5 degrees unilateraly,7.5degrees bilaterlly, 0.5mm,1mm,and 3mm respectively.The Dentist group could detect 2.5 degree change in maxillary central incisor;0.5mm with increase of crown length,0.5mm with decrease of crown length and 1mm with open gingival embrasure.In the non-professional group, it was 5 degrees,0.5mm,0.5mm and 2mm respectively. The sensitivity to identify changes on incisor crown angulation and open gingival embrasure was different in two groups; however that was not significant difference on crown length ......
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