目的研究插销式嵌体冠在短龈距磨牙残冠修复中的固位效果。方法将43例短龈距磨牙残冠行完善根管后采用插销式嵌体冠形式修复,术后随访2年,根据美国公共卫生署修订标准评判临床修复效果。结果饰瓷崩瓷2例、牙龈炎5例、2例修复体脱落失败,其余修复体边缘密合,固位稳定,咬合良好。结论插销式嵌体冠是临床治疗短龈距磨牙残冠的可靠修复方法。 Objective To study the retention effect of a bolt-shaped inlay crown in the restoration of molars with short gingival sulcus. Methods Forty-three patients with short gingival cavernous molars were repaired with complete root canals and then with a bolt-on inlay crown. The patients were followed up for 2 years. The clinical revisions were evaluated according to the revised standards of the U.S. Department of Public Health. Results Porcelain porcelain collapse in 2 cases, 5 cases of gingivitis, 2 cases of prosthesis failed to fall off, the rest of the prosthesis edge close, stable retention, good bite. Conclusion The plug-in invisible crowns is a reliable method of repairing the residual crown of short molars.