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目的利用后磨牙根分歧分离后的残根进行冠修复的探讨。方法①对牙龈退缩至根分歧处的后磨牙的残冠或残根充分分离根分歧,进行根管治疗,2x-ray见残根骨内长度≥5 mm、根长≥7mm,根尖炎症消失;③每个根单独制作桩核,连冠修复,面形成后磨牙形态。结果修复体完好,边缘密合、稳固,至今未出现脱落现象,其中9例咀嚼功能良好,2例咀嚼不适,调后好转。结论后磨牙病变达根分歧的残冠或残根,在根长≥7mm、骨内长度≥5 mm,不松动的情况下,无需拔除,经完善的根管治疗后冠修复,恢复咀嚼功能。
OBJECTIVE: To investigate the use of residual roots after the separation of post-molars root. Methods ① After the gingival recession to the root of the differences in the remnants of the residual molars or residual roots of the full separation of root disruption, root canal treatment, 2x-ray see the residual root bone length ≥ 5mm, root length ≥ 7mm, apical inflammation disappeared ; ③ separate production of each root of the post-core, even the crown repair, surface morphology after molars. Results The prosthesis was intact, the edge was close and firm, and no shedding occurred so far. Among them, 9 patients had good chewing function, 2 patients had mastication discomfort, and their symptoms improved after adjustment. Conclusion The remnant or remnant of root remnant in post-molars disease can be repaired without restoration with root length≥7mm, intra-bone length ≥5mm and without loosening. After complete root canal treatment, the crown is restored and the chewing function restored.