全口义齿人工牙的选择与排列

选牙与排牙是全口义齿制作的关键步骤之一。前牙选择的要素包括人工牙的形态、大小和颜色。后牙则主要考虑型,一般包括三种类型:解剖式牙、半解剖式牙、非解剖式牙(例如舌向集中型牙)。排列前牙对于恢复患者唇部正常外形以及改善发音都有重要影响,应尽量避免左右牙齿过于对称而引起的"假牙面容"。后牙排列则侧重恢复咬合功能。全口义齿完成选牙和排牙后应进行临床试戴,目的是检查前牙美观是否满意、基托边缘是否合适、咬合是否良好等。

The selection and arrangement of artificial teeth for complete dentures

The selection and arrangement of artificial teeth are the key steps for complete denture manufacture.Those important factors influence the shape,size and mold of artificial teeth in the denture.Occlusion is the major consideration of posterior teeth which includes anatomic,semi-anatomic and nonanatomic(e.g.lingualized occlusion) types of the teeth.It is the arrangement of the teeth that governs the contour of the lips,at rest and in speech.The most natural appearance of anterior teeth can be obtained when "denture face"(with too perfect symmetry and regularity of the artificial teeth arrangement) is avoided.For the setting of posterior teeth stable denture occlusion requires preservation of posterior centric occlusal stop.The trial denture appointment is used to evaluate and change,if necessary,the mold,shape and esthetic effects of anterior teeth,centric relation,and other characteristics of the denture before final processing.