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随着修复技术的发展,越来越多的严重缺损的患牙得以保存修复。但是,对于后牙残冠即仅剩余1/4以下冠部的病例罕见冠部单独以全冠修复的报道。笔者设计一种金瓷冠、嵌体整体铸造修复体来修复后牙冠严重残冠的病例,一年多来共做8例,取得了较满意的效果,现介绍如下。 一、适应征 1.后磨牙由于各种原因导致牙冠部大部缺失,仅有1/4以下部分轴壁,一般不少于两个轴壁,如一个轴壁最好为一比较完整的轴面。 2.双尖牙大部分缺失难以用桩—核—冠系统修复。 3.残存牙根无松动、无牙周炎症和根尖周炎症,或虽有炎症但经完善的根管牙周治疗。
With the development of repair technology, more and more severely damaged teeth can be preserved. However, in the case of the posterior teeth residual crown that only the remaining 1/4 or less crowns rarely seen crow crown repair alone. I design a gold porcelain crown, inlay casting casting body to repair the crown of severe residual crown cases, a total of more than a year to do 8 cases, and achieved more satisfactory results, are presented below. First, the adaptation of 1. Post molar due to various reasons, most of the loss of the crown, only part of the shaft wall below 1/4, generally not less than two shaft wall, such as a shaft wall is best for a more complete Axial. Most of the absence of bicuspid can not be repaired by the pile-core-crown system. 3. Residual roots without loosening, no periodontal inflammation and periapical inflammation, or inflammation, but after a sound periodontal root canal therapy.