Martin Adam J, Buschang Peter H, Boley Jimmy C, Taylor Reginald W, McKinney Thomas W
Department of Orthodontics, Baylor College of Dentistry, Texas A&M Health Sciences Center, Dallas, Texas 75246, USA.
Eur J Orthod. 2007 Oct;29(5):530-7. doi: 10.1093/ejo/cjm063.
The aim of this study was to assess the impact of various sized buccal corridors (BCs) on smile attractiveness. One female smiling photograph, displaying first molar to first molar (M1-M1), was digitally altered to produce (1) smiles that filled 84, 88, 92, 96, and 100 per cent of the oral aperture; (2) second premolar to second premolar smiles (PM2-PM2) that filled 84, 88, 92, and 96 per cent of the oral aperture; and (3) smiles with asymmetrical BC that filled 88, 90, 94, and 96 per cent of the oral aperture. The 18 smiles produced were evaluated by 82 orthodontists (70 males and 12 females) and 94 laypeople (40 males and 54 females). Paired t-tests were used to evaluate differences within the orthodontist and laypeople groups: independent t-tests were used to compare the two groups. The effect of age and gender on the ratings was evaluated by two-way analysis of variance. Orthodontists and laypeople rated smiles with small BCs as significantly (P < 0.05) more attractive than those with large BCs. Orthodontists rated M1-M1 smiles as more attractive than PM2-PM2 smiles, whereas laypeople preferred PM2-PM2 smiles. Orthodontists rated only two of eight asymmetrical smiles as less attractive than would be expected for symmetrical smiles with similar arch widths; laypeople did not rate any asymmetrical smiles as less attractive than would be expected. Rater age and gender did not significantly influence the impact of BCs on smile attractiveness.
本研究的目的是评估不同大小的颊间隙（BCs）对笑容吸引力的影响。选取一张女性微笑照片，展示从第一磨牙到第一磨牙（M1-M1），对其进行数字修改以生成：（1）占口腔开口84%、88%、92%、96%和100%的笑容；（2）占口腔开口84%、88%、92%和96%的第二前磨牙到第二前磨牙（PM2-PM2）笑容；以及（3）占口腔开口88%、90%、94%和96%的不对称BCs笑容。生成的18种笑容由82名正畸医生（70名男性和12名女性）和94名外行人（40名男性和54名女性）进行评估。配对t检验用于评估正畸医生组和外行人组内部的差异：独立t检验用于比较两组。通过双向方差分析评估年龄和性别对评分的影响。正畸医生和外行人都认为小BCs的笑容比大BCs的笑容显著更具吸引力（P < 0.05）。正畸医生认为M1-M1笑容比PM2-PM2笑容更具吸引力，而外行人更喜欢PM2-PM2笑容。正畸医生认为八个不对称笑容中只有两个比具有相似牙弓宽度的对称笑容预期的吸引力更低；外行人没有将任何不对称笑容评为比预期的吸引力更低。评分者的年龄和性别对BCs对笑容吸引力的影响没有显著影响。
