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造成牙列缺损的原因主要是病理性龋病,牙周病,外伤牙折,本文报告的是磨牙缺损部分托牙修复。介绍如下: 一、适应症磨牙缺失过久,对(牙合)牙列(牙合)上移位至缺隙区龈(牙合)距离过短,或邻牙移位近远中间隙过小,而两端邻牙不松动,牙周健康。二、操作要点①牙体制备:缺隙区近中或远中的基牙上制备(牙合)支托凹要求近远中长度为基牙(牙合)面1/4,颊舌宽度为基牙的1/3,支托凹应呈匙形,对(牙合)牙过度伸长的功能尖应进行调磨。②蜡型雕刻:在缺隙
The causes of dentition defects mainly due to pathological caries, periodontal disease, traumatic tooth fractures, the paper reports the restoration of molars partial denture. The introduction is as follows: First, the indications Molar missing too long on the (occlusal) dentition (occlusion) on the shift to the gap Gingival (occlusal) distance is too short, or adjacent teeth shift near the gap too small , While the two ends of the adjacent tooth is not loose, periodontal health. Second, the main points of operation ① preparation of the tooth: the gap in the near or far preparation of the abutment on the abutment (occlusal) support concave near the length of the abutment (occlusal) face 1/4, buccal and lingual width of Teeth 1/3, supporting concave should be spoon-shaped, on the (Occlusal) teeth excessive elongation of the tip should be polished. ② wax-type sculpture: in the gap