牙残根
CONCLUSION: With the alveolar bone resorption, the post materials make great impacts on the peak value of maximum crushing stress in the residual teeth root, especially the mechanic capability of post materials.
结论:伴牙槽骨吸收时,牙桩的材料成为影响剩余牙根内部最大主应力峰值的决定性因素,桩材料的力学性能对剩余牙体的影响更为显著。
The Importance of the Various Solutions to One Question-Supported by the Methods of the Addition Theorem of the Cosine Law; Residual dentin thickness in upper anterior teeth after root canal preparation
用余弦的加法定理不同的证明来说明一题多解的重要性上颌前牙三种不同方法根管预备后剩余根管壁厚度的研究
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