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目的观察下颌第一磨牙残根残冠经根管治疗、牙周手术及桩核联冠修复后的疗效。方法选68个下颌第一磨牙的残根残冠,贯序进行一次性根管治疗术、分根术、牙冠延长术及桩核联冠修复。结果随诊2年,2例失去联络,4例失败。成功率为93.94%。结论下颌第一磨牙残根残冠要尽量保留,进行上述贯序治疗,效果良好。
Objective To observe the effect of root canal treatment on the residual root of the first molars of mandibular canals, periodontal surgery and post crown combined with crown restoration. Methods A total of 68 mandibular first molar residual root canvases were treated with one-time root canal therapy, root-radical surgery, crown extension and post-core crown restoration. Results 2 years follow-up, 2 cases lost contact, 4 cases failed. The success rate was 93.94%. Conclusions The residual crown of the first molars of mandibular first molar should be kept as far as possible, and the effect of the sequential procedure is good.