Kurer H G
J Prosthet Dent. 1983 May;49(5):633-5. doi: 10.1016/0022-3913(83)90387-6.
The failure of crown posts is a frustrating experience. Explanations are given for difficulty in following the rules and for the validity of post design. The need for an additional retention is also postulated. A threaded post design is suggested to reduce the retention problem. The purely cement-retained cast post cannot comply with all the ground rules for supporting the restoration of an endodontically treated tooth. Threaded posts show a degree of success and are capable of further development. They represent progress in the correct direction.
桩核冠的失败是一种令人沮丧的经历。文中对遵循规则的困难以及桩核设计的有效性给出了解释。还假设了额外固位的必要性。建议采用螺纹桩设计以减少固位问题。单纯粘固式铸造桩无法完全符合支持根管治疗后牙齿修复的所有基本规则。螺纹桩已显示出一定程度的成功，并且有进一步发展的潜力。它们代表了朝着正确方向的进步。
