目的：探讨磨牙残根残冠的非金属修复方法。
Objective: To discuss the prosthetic methods of molars residual root and crown with nonmetallic material.
结论：分体桩核冠能较好地修复老年人磨牙残根残冠。
Conlusion: the restoration of molars residual root and crown of the aged can be improved by means of split dowel crown.
结果：建立了上颌第一磨牙残根桩核冠的三维有限元模型。
Result: the three-dimensional models of the first maxillary molar residual root restored with post-core crown were generated.
目的采用不平行就位道桩核烤瓷冠修复磨牙残根残冠多根管。
Objective To repair the residual roots and crowns of the molars with multi-canals using unparalleled posts and cores and ceramic crowns.
方法利用铸造法制做不平行就位道桩核，完成对磨牙残根残冠的保存修复。
Methods Unparalleled insertion of the posts and cores was adopted in the casting of the ceramic crown to repair the residual roots and crowns of the molars.
可能的诱发原因：虽说都叫磨牙症，但磨牙的情况各不相同，从牙关紧闭到疯狂磨牙直到牙齿只剩残根。磨牙通常是由遗传或压力造成的。
Likely cause: Known as bruxism, teeth-grinding varies from jaw clenching to ferocious grinding that wears teeth down to stumps. It is usually due to genetics or stress.
方法：选择牙根分叉较大的磨牙残冠残根，经完善根管充填后，制作分体栓道式铸造桩核，然后精密铸造金属全冠修复。
Methods: The residual crown and root of large furcation molars by full root-fill were chosen. Then casting anatomy bolt post-core molars are restored with finely casting full crowns.
目的：观察分体栓道式铸造桩核在磨牙残冠残根修复中的作用。
Objective: to observe the effect of casting anatomy bolt post-core in restoration of residual crown and root of molars.
一个后磨牙分离残根以两个前磨牙修复效果理想，本研究旨在从理论上探讨这种修复方法的可行性。
Restoring of two premolars replace a molar that was residual root of separating was nice. The feasibility of this method was studied in this paper.
方法选择磨牙的残根残冠，经完善的根管治疗后，采用分根法作保存修复。
Methods Separating roots was used for the conservative prosthetics of the molars residual roots and crowns which were selected. All these must be done after excellent root canal therapy.
方法选择磨牙的残根残冠，经完善的根管治疗后，采用分根法作保存修复。
Methods Separating roots was used for the conservative prosthetics of the molars residual roots and crowns which were selected. All these must be done after excellent root canal therapy.
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