[摘要]目的：研究不同厚度3M大块树脂充填治疗前磨牙V类洞的修复效果和美学效果。方法：选取2019年6月-2021年6月笔者医院115例接受3M光固化大块复合树脂充填治疗的前磨牙V类洞患者为研究对象，按照就诊顺序将患者编号，然后采用随机数字表均分为观察组57例(患牙92颗)和对照组58例(患牙85颗)，观察组采用一次性充填修复，对照组采用分层充填修复，比较两组修复效果、边缘密合度、牙周健康状况及外观满意度。结果：两组色泽协调性、边缘密合性、表面形态和继发龋分级差异无统计学意义(P>0.05)，观察组边缘着色满意度高于对照组，差异有统计学意义(P<0.05)；两组术后1、6、12个月时修复体与牙体间隙边缘密合度比明显升高(P<0.05)，且观察组术后1、6、12个月时间隙边缘密合度比低于对照组，差异有统计学意义(P<0.05)；两组术后12个月时探诊深度(Probing depth，PD)、附着指数(Attachment level，AL)及出血指数(Bleeding index，BI)明显降低(P<0.05)，且两组间PD、AL和BI比较差异无统计学意义(P>0.05)；术后12个月时，观察组患牙颜色视觉模拟法(Visual analogue scale，VAS)评分明显高于对照组(P<0.05)，两组整体轮廓和表面形态VAS评分差异无统计学意义(P>0.05)。结论：3M大块充填树脂治疗前磨牙V类洞时采用一次性充填有利于修复体与牙体间隙比，提升修复体边缘密合度，改善美观度，治疗效果较分层充填具有明显优势。

    [关键词]3M大块树脂；厚度；前磨牙；V类洞；边缘密合度；美学效果

    [中图分类号]R783.1" " [文献标志码]A" " [文章编号]1008-6455(2024)12-0164-04

    Aesthetic Effect of 3M Bulk Resin Filling with Different Thicknesses on Class V Cavities of Premolars

    GAO Xin1， DI Jing1， CHEN Wanxi2， TAN Hao1， GU Yuehui3

    ( 1.Department of Endodontics， 2.General Department， 3.Senior Specialist Clinic， Zhenjiang Stomatological Hospital， Zhenjiang 212001， Jiangsu， China )

    Abstract： Objective" To study the restoration effect and aesthetic effect of different thicknesses of 3M bulk resin filling in the treatment of class V cavities of premolars. Methods 115 patients who received light-curing 3M bulk composite resin filling for class V cavities of premolars in the hospital between June 2019 and June 2021 were selected as samples. The patients were numbered according to the order of treatment ......