Vig R G, Brundo G C
J Prosthet Dent. 1978 May;39(5):502-4. doi: 10.1016/s0022-3913(78)80179-6.
A survey has been presented that correlates measurements of upper lip type, sex, race, and age of dentulous patients with the amount of exposure of the maxillary and mandibular anterior teeth with the lips gently parted and in the resting position. Perhaps the most interesting finding was the gradual reduction in the amount of maxillary central incisor exposure with an increase in age, accompanied by a gradual increase in the mandibular tooth exposure. The importance of the amount of mandibular teeth seen in complete dentures has not been sufficiently emphasized in previous literature.
一项调查表明，对于有牙患者，在嘴唇轻轻分开和处于休息位置时，对上唇类型、性别、种族和年龄与上颌和下颌前牙暴露量之间的关系进行了测量。也许最有趣的发现是，随着年龄的增长，上颌中切牙暴露量逐渐减少，同时下颌牙齿暴露量逐渐增加。在以往的文献中，全口义齿中可见下颌牙齿数量的重要性尚未得到充分强调。
