Department of Orthodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Private practice, Tehrn, Iran.
Am J Orthod Dentofacial Orthop. 2018 Sep;154(3):412-420. doi: 10.1016/j.ajodo.2017.11.040.
The patient's perception of facial esthetics is not necessarily consistent with that of the practitioner. The aim of this study was to compare the perceptions of Persian orthodontists, oral surgeons, and laypersons with regard to facial profile attractiveness and the most favorable mandibular position.
Software (Dolphin Imaging and Management Systems, Chatsworth, Calif) was used to alter the mandibular position depicted on profile photographs of a young man and a young woman. Nine construction profile photos were produced with incremental changes of the G'-Sn-Pg' angle at 2° intervals (6° to 22°). Thirty-two orthodontists, 32 maxillofacial surgeons, and 32 laypersons were asked to score all 18 profiles on a 1-to-10 visual analog scale. They also evaluated whether each profile needed orthognathic surgery for improvement of facial esthetics. Actual agreement and intraclass correlation coefficient tests were used to assess reliability. The data were analyzed using 2-way repeated measures analysis of variance and Wilcoxon signed-rank tests.
The intraparticipant reliability was acceptable (intraclass correlation coefficient >72%; actual agreement, >79%). The sex of the participants was not a significant factor influencing the scores, although the sex of the models was a discriminating factor for the most acceptable mandibular horizontal position. The scores given by the 3 groups were different, especially for the female model. The orthodontists had similar opinions and preferred a slightly more protrusive mandible (G'-Sn-Pg', 12°-14°). Laypersons' scores were the most inconsistent, and they generally preferred a retrusive profile (G'-Sn-Pg', 14°-18°). There was no significant correlation with regard to the necessity of orthognathic surgery for G'-Sn-Pg' angles over 20° in men and below 8° in women.
Although the laypersons' perceptions were slightly different from those of the clinicians, most participants preferred a more protrusive mandible for male models compared with female models.
患者对面部美观的感知不一定与医生的感知一致。本研究旨在比较波斯正畸医生、口腔颌面外科医生和非专业人士对面部侧貌吸引力和最理想下颌位置的看法。
使用软件（加利福尼亚州恰茨沃斯的 Dolphin Imaging and Management Systems）改变一名年轻男性和一名年轻女性的侧位照片中下颌的位置。以 2°为间隔（6°至 22°），产生 9 张改建侧貌照片。32 名正畸医生、32 名口腔颌面外科医生和 32 名非专业人士被要求在 1 到 10 的视觉模拟量表上对所有 18 个侧貌照片进行评分。他们还评估了每个侧貌是否需要正颌手术来改善面部美观。实际一致性和组内相关系数检验用于评估可靠性。使用双向重复测量方差分析和 Wilcoxon 符号秩检验对数据进行分析。
组内参与者的可靠性是可以接受的（组内相关系数>72%；实际一致性>79%）。参与者的性别不是影响评分的重要因素，但模型的性别是最可接受的下颌水平位置的区分因素。3 组的评分不同，尤其是对女性模型。正畸医生的意见相似，更喜欢稍微突出的下颌（G'-Sn-Pg'，12°-14°）。非专业人士的评分最不一致，他们通常更喜欢退缩的侧貌（G'-Sn-Pg'，14°-18°）。对于男性 G'-Sn-Pg'角度超过 20°和女性 G'-Sn-Pg'角度低于 8°，没有关于是否需要正颌手术的显著相关性。
尽管非专业人士的看法与临床医生略有不同，但与女性模型相比，大多数参与者更喜欢男性模型更突出的下颌。
