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目的:探讨插销式桩冠在低龈距后牙残根冠修复中的应用和操作程序。方法:对25例32个低龈距后牙残根冠进行桩冠修复,取其较直根管作为主桩制作桩冠,分叉较大的根管制作插销,插入冠部预留的孔道辅助固位。结果:随访1～5a,失访3例,其余29例修复体均未出现松动和根折等现象,边缘密合、咬合关系和邻接关系良好。结论:用插销式桩冠修复低龈距后牙残根冠,固位强、抗力好,可最大限度恢复患牙的功能和美观。
Objective: To investigate the application and operating procedure of the bolt-on post crown in the restoration of posterior teeth of the posterior teeth with low gingival distance. Methods: Twenty-five cases of posterior root crowns with low gingival distance posterior teeth were repaired with crown. The crown was taken as the main pile and the crown was made. Channel assisted retention. Results: Followed up for 1 ~ 5 years, 3 cases were lost to follow-up. The other 29 cases did not appear loosening and root fracture, and the margins were close. The occlusal relationship and adjacent relationship were good. CONCLUSION: The use of pin-type post crown for the restoration of low-gluteal gingival posterior root crowns with strong retention and good resistance can restore the function and aesthetics of the affected teeth to the maximum extent.