Peck S, Peck L, Kataja M
Department of Orthodontics, Harvard School of Dental Medicine, Boston, Mass.
Am J Orthod Dentofacial Orthop. 1992 Jun;101(6):519-24. doi: 10.1016/0889-5406(92)70126-U.
This study was performed to elucidate quantitatively upper lip-tooth-jaw relativity in the vertical dimension. Values for five linear dentolabial measurements were generated from male (n = 42) and female (n = 46) reference samples. In addition, three vertical skeletofacial dimensions and two vertical dental dimensions were recorded. A significant sexual dimorphism was found in the vertical lip-tooth-jaw relationship: the upper lip of the female subjects was positioned on average 1.5 mm more superiorly at maximum smile than the upper lip of the male subjects (p less than 0.01). High smile lines appeared to be a female lineament, and low smile lines appeared to be a male lineament. There was a significant sex difference in upper lip length: the male subjects exhibited a longer upper lip than the female subjects (p less than 0.001). The mean difference was 2.2 mm. A similarly significant male-female difference was seen in the skeletal maxillary height measurement: the male sample showed a 2.2 mm mean vertical maxillary increase over the female sample (p less than 0.001). Furthermore, a significant difference was found between the clinical crown height of the maxillary central incisors in the male and female subjects of comparable ages: the male group had longer central incisor crowns (p less than 0.01).
本研究旨在定量阐明垂直方向上唇、牙、颌的相关性。从男性（n = 42）和女性（n = 46）参考样本中得出五项唇齿线性测量值。此外，记录了三个垂直面部骨骼维度和两个垂直牙齿维度。在垂直唇齿颌关系中发现了显著的性别差异：女性受试者的上唇在最大微笑时平均比男性受试者的上唇高出1.5毫米（p < 0.01）。高微笑线似乎是女性特征，低微笑线似乎是男性特征。上唇长度存在显著的性别差异：男性受试者的上唇比女性受试者的上唇长（p < 0.001）。平均差异为2.2毫米。在骨骼上颌高度测量中也观察到类似的显著男女差异：男性样本的上颌垂直平均比女性样本增加2.2毫米（p < 0.001）。此外，在年龄相当的男性和女性受试者中，上颌中切牙的临床冠高存在显著差异：男性组的中切牙冠更长（p < 0.01）。
