Department of Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.
Private Practice, Orchid Dental, Jeddah, Saudi Arabia.
Medicine (Baltimore). 2022 Mar 4;101(9):e28660. doi: 10.1097/MD.0000000000028660.
There is a gap in research about the differences in smile attractiveness. The problem the study addresses is how the vertical canine and incisor position affect smile attractiveness. The aim of this study was to assess the perception of the smile attractiveness between Saudi laypersons, orthodontists, non-orthodontist, and various dental students levels, and to determine how the canine and incisor vertical positions affect the attractiveness of smile. The study is a cross-sectional survey and was conducted at King Abdulaziz University, Jeddah, Saudi Arabia. Six groups of subjects participated in the study: Orthodontic residents (n = 31), prosthodontic, restorative, periodontics specialties residents specialties residents (n = 30), interns (n = 31), fifth year students (n = 41), 6th year students (n = 39), and laypeople (n = 39). Participants were asked to rate the attractiveness of a smile of a female subject photographed using a Minolta DiMage 7i digital camera. The image had been manipulated to produce 2 sets of images; 1 to modify the incisors and 1 to change the canines. The subjects were asked to choose the most and least attractive picture. For the best incisor positions, only the laypeople and prosthodontics liked the original picture, the rest liked +0.5 mm which accentuate the smile curve and make it follow the lower lip line. For the worst incisor position, all groups did not prefer the minus 1.5 reversed smile. For the best canine vertical position, all groups preferred the original position where canine was at the level of the incisal plane. For the worst canine position, they all disliked the minus 1.5 reversed smile. Results confirmed past findings that orthodontists are in general more critical about smile attractiveness than laypersons, but just like other dental specialists. The findings can be used in the esthetic dentistry field, but further research on the study population based on other dental design parameters remain necessary.
关于微笑吸引力的差异，研究中存在一个空白。本研究旨在解决的问题是，犬齿和切牙的垂直位置如何影响微笑的吸引力。本研究的目的是评估沙特外行、正畸医生、非正畸医生和不同牙科学生水平之间的微笑吸引力感知，并确定犬齿和切牙垂直位置如何影响微笑的吸引力。该研究是一项横断面调查，在沙特阿拉伯吉达的阿卜杜勒阿齐兹国王大学进行。六组受试者参与了这项研究：正畸住院医师（n = 31）、修复科、牙周科专业住院医师（n = 30）、实习医师（n = 31）、五年级学生（n = 41）、六年级学生（n = 39）和外行（n = 39）。参与者被要求对一名女性受试者的微笑吸引力进行评分，该女性受试者的微笑由 Minolta DiMage 7i 数码相机拍摄。该图像已被处理以生成 2 组图像；一组用于修改切牙，另一组用于改变犬齿。要求受试者选择最吸引人的和最不吸引人的图片。对于最佳切牙位置，只有外行和修复科喜欢原始图片，其余的则喜欢 +0.5mm 的切牙，这可以突出微笑曲线，并使其跟随下唇线。对于最糟糕的切牙位置，所有组都不喜欢负 1.5 度反转的微笑。对于最佳的犬齿垂直位置，所有组都更喜欢犬齿与切牙平面平齐的原始位置。对于最糟糕的犬齿位置，他们都不喜欢负 1.5 度的反转微笑。结果证实了过去的发现，即正畸医生通常比外行更注重微笑的吸引力，但与其他牙科专家一样。这些发现可用于美容牙科领域，但仍需要对基于其他牙科设计参数的研究人群进行进一步研究。
