Hunter A J, Hunter A R
Auckland Fixed Prosthodontic Clinic, Remuera, New Zealand.
Curr Opin Dent. 1991 Apr;1(2):199-205.
Recently published studies on the treatment of endodontically treated teeth have confirmed and expanded on the restorative directions outlined in earlier work. The significance of endodontic treatment in reducing tooth strength has been questioned, and the potential influence of previous operative cavity designs highlighted. Other work has supported the contention that following the placement of a well-fitting crown, the strength of the post foundation, the core foundation, or both is relatively unimportant in determining the overall strength of endodontically treated teeth. In particular, it appears unnecessary to incorporate a ferrule effect as part of a post-and-core foundation. It seems that the height of the remaining tooth structure between the core and the crown margin is a much more significant factor in determining the fracture resistance of these teeth. Many articles have demonstrated the potential influence of material interactions at all stages of the restorative process. Further work in this area is likely to greatly complicate clinical decision making when restoring endodontically treated teeth.
最近发表的关于根管治疗后牙齿治疗的研究证实并扩展了早期工作中概述的修复方向。根管治疗对牙齿强度降低的影响受到质疑，先前手术腔设计的潜在影响也受到关注。其他研究支持这样的观点，即在安装合适的牙冠后，桩核基础或两者的强度在确定根管治疗后牙齿的整体强度方面相对不重要。特别是，似乎没有必要将箍效应纳入桩核基础。看来，核心与牙冠边缘之间剩余牙齿结构的高度在决定这些牙齿的抗折性方面是一个更重要的因素。许多文章都证明了修复过程各个阶段材料相互作用的潜在影响。这一领域的进一步研究可能会使根管治疗后牙齿修复时的临床决策变得更加复杂。
