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前后向咬合异常(上颌前突或下颌前突),往往出现牙列变形,义齿修复相当困难。金属烤瓷义齿在很大程度上能满足功能和美容的需要,在义齿修复之前必须进行充分的准备。作者治疗前后向咬合异常同时有上下颌牙列缺损71例,其中上颌前突49例,下颌前突22例,年龄22～47岁。按Kennedy氏分类,上颌牙列缺损Ⅰ类14例,Ⅱ类16例,Ⅲ类32例,Ⅳ类9例;下颌牙列缺损分别为16、21、26和8例,义齿修复前调整牙列咬合平面,有的牙去髓调(牙合),有的施行正牙治疗。根据临床检查和颞颌关节X线检查,下颌前后向移位1～2mm者,在下颌作塑胶冠或在上颌作斜面导板进行矫正;然后修复牙列缺损,先在磨牙区制作义齿恢复咬合高度,后在
Abnormal occlusion anterior or posterior (maxillary protrusion or mandibular protrusion), dentition often appear deformed, denture repair quite difficult. Metal porcelain dentures to a large extent to meet the functional and cosmetic needs, denture repair must be fully prepared. There were 71 cases of maxillary and mandibular dentition defects before and after treatment, including 49 cases of maxillary protrusion and 22 cases of mandibular protrusion, aged from 22 to 47 years. According to Kennedy's classification, there were 14 cases of type I maxillary dentition defect, 16 cases of type II, 32 cases of type III and 9 cases of type IV. The mandibular dentition defects were 16, 21, 26 and 8 cases respectively. Bite plane, some teeth to the pulp (occlusion), and some orthodontic treatment. According to the clinical examination and the temporomandibular joint X-ray examination, the mandibular anterior and posterior shift of 1 ~ 2mm, plastic crown in the mandibular or in the upper jaw for bevel guide correction; and then repair the dentition defect, first in the molar area dentures to restore the occlusion height After