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有几个口腔解剖标志与天然牙有固定的位置关系,可作为人造牙替换天然牙的可靠指导。这些标志是:上颌唇前庭、切牙乳突、下颌唇前庭、上颌结节及磨牙后垫。上颌唇前庭:从尖牙到尖牙的前庭软组织反映,形成该区的义齿边缘,从模型上,与验平面呈直角进行观察,六个上前牙的唇面与义齿边缘一致,即以此为参考排列上前牙。另外,在多数天然牙列,从上中切牙的切缘到唇前庭紧靠唇系带的距离是22毫米,其差异很少超过1毫米。切牙乳突:它将天然牙列和上颌骨平分为两半,可作为排牙时的参考。另一参照点,是切牙乳头前缘到中切牙唇面的距离,方形牙弓为5毫米,卵圆形牙弓为6毫米,尖形
There are several oral anatomical landmarks and natural teeth have a fixed position, can be used as a reliable guide to replace natural teeth artificial teeth. These signs are: maxillary labial vestibule, incisor, papillary vestibule, maxillary nodules and molars rear pad. Upper labial vestibule: reflected from the canine to canine vestibular soft tissue, forming the edge of the denture in this area, from the model, and the test plane was observed at right angles, the six anterior teeth and lip denture edge, that as Arrange the upper teeth for reference. In addition, the distance between the incisors of the maxillary incisors and the labial vestibule in most natural dentitions is 22 mm, a difference of which rarely exceeds 1 mm. Incisor: It will bisect the natural dentition and maxilla, can be used as a reference when the teeth. Another reference point is the distance from the incisal edge of the incisor to the face of the incisor face with 5 mm square arch and 6 mm oval arch