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。
2
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。
3
As indicated by data of settlement observation underpinning with tree rootpile prevented the unequal settlement of building effectively.