Objective To note that the traditional pile of metal casting is still the important methods for root and crown restoration.
目的说明传统的铸造金属桩核仍是修复残根残冠的重要方法。
Methods:Two kinds of pile nuclear crown prosthesis were made and the break of pile nuclear and root canal, the fall off of the pile and cervical margin were compared.
方法分别制作两种桩核冠修复体比较其桩核折断、根管折断、桩松动脱落、颈缘等情况。
As indicated by data of settlement observation underpinning with tree root pile prevented the unequal settlement of building effectively.
沉降观测资料表明，采用树根桩托换技术有效地制止了建筑物的不均匀沉降。
As indicated by data of settlement observation underpinning with tree root pile prevented the unequal settlement of building effectively.
沉降观测资料表明，采用树根桩托换技术有效地制止了建筑物的不均匀沉降。
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