[摘 要]目的 探讨在龈下楔状缺损修复中实施微创牙冠延长术联合纳米树脂治疗的效果。方法 选择我院2019年5月-2023年5月收治的180例龈下楔状缺损患者为研究对象，采用随机数字表法分为对照组和研究组，各90例。对照组采用常规牙冠延长术联合纳米树脂治疗，研究组采用微创牙冠延长术联合纳米树脂治疗，比较两组修复效果、牙周健康水平、疼痛程度及美观满意度。结果 研究组优良率为95.56%，高于对照组的80.00%(P<0.05)；研究组术后3个月PD水平低于对照组，AL水平高于对照组(P<0.05)；研究组术后3个月BI、MD水平高于对照组，但差异无统计学意义(P>0.05)；研究组术后1 d、3 d、7 d的NRS评分低于对照组(P<0.05)；研究组美观满意度为95.56%，高于对照组的81.11%(P<0.05)。结论 微创牙冠延长术联合纳米树脂修复应用于龈下楔状缺损患者中的临床效果确切，能改善牙周健康水平，改善患者疼痛程度，进而提高美观满意度，值得临床应用。

    [关键词] 微创牙冠延长术；龈下楔状缺损；微创修复

    [中图分类号] R783.3 [文献标识码] A [文章编号] 1004-4949(2024)13-0113-04

    Clinical Effect of Minimally Invasive Crown Lengthening Combined with Nano-resin in Repairing Subgingival Wedge-shaped Defects

    GUO Si-yan， LIU Zhao

    (Department of Stomatology， Xi’an NO.9 Hospital， Xi’an 710054， Shaanxi， China)

    [Abstract]Objective To investigate the effect of minimally invasive crown lengthening combined with nano-resin in the repair of subgingival wedge-shaped defects. Methods A total of 180 patients with subgingival wedge-shaped defects admitted to our hospital from May 2019 to May 2023 were selected as the research objects. They were divided into control group and study group by random number table method ......