Orsini M Gabriela, Huang Greg J, Kiyak H Asuman, Ramsay Douglas S, Bollen Anne-Marie, Anderson Nina K, Giddon Donald B
Department of Orthodontics, University of Washington, Seattle 98195-7134, USA.
Am J Orthod Dentofacial Orthop. 2006 Sep;130(3):283-91. doi: 10.1016/j.ajodo.2005.01.026.
Facial profile disharmonies in the anteroposterior (AP) position of the mandible are among the most frequent reasons that patients seek orthodontic treatment. Various methods are available for assessing profile preferences, and differences between them could affect treatment decisions. The purposes of this study were to compare and contrast 3 methods of evaluating profile preferences for the AP position of the mandible.
Facial profile preferences of white orthodontists (n = 28) and white (n = 56) and Japanese-American (n = 55) laypeople were evaluated. The esthetic significance of variations in the AP position of the mandible was investigated by using 3 methods: a traditional semantic differential scale, the Perceptometrics method (Health Programs Intl, Wellesley, Mass), and the implicit association test (IAT).
Findings from the semantic differential scale show that, overall, there is a general preference among orthodontists and laypeople for an orthognathic profile (P <.001). Findings from the Perceptometrics method indicate that orthodontists consider the most pleasing profile to be more forward than do lay subjects (P <.001). The IAT results show a positive bias among all 3 groups toward orthognathic profiles and a negative bias toward profiles with mandibular retrognathism or prognathism. The IAT suggested that laypeople were more tolerant of mandibular prognathism in men than in women (P <.01), and more tolerant of mandibular retrognathia in white women than in men (P = .03).
These results support the benefits of using both implicit and explicit methods to assess facial profile preferences.
下颌骨前后位的面部轮廓不协调是患者寻求正畸治疗最常见的原因之一。有多种方法可用于评估面部轮廓偏好，而它们之间的差异可能会影响治疗决策。本研究的目的是比较和对比三种评估下颌骨前后位面部轮廓偏好的方法。
评估了白人正畸医生（n = 28）以及白种人（n = 56）和日裔美国人（n = 55）普通民众的面部轮廓偏好。通过三种方法研究下颌骨前后位变化的美学意义：传统语义差异量表、感知测量法（健康项目国际公司，马萨诸塞州韦尔斯利）和内隐联想测验（IAT）。
语义差异量表的结果表明，总体而言，正畸医生和普通民众普遍更喜欢直面型（P <.001）。感知测量法的结果表明，正畸医生认为最令人愉悦的轮廓比普通受试者的更靠前（P <.001）。IAT结果显示，所有三组对直面型均存在正偏差，对下颌后缩或前突的轮廓存在负偏差。IAT表明，普通民众对男性下颌前突的容忍度高于女性（P <.01），对白种女性下颌后缩的容忍度高于男性（P =.03）。
这些结果支持使用内隐和外显方法评估面部轮廓偏好的益处。
