宁红亮　杨红珍　刘亚楠　冯良　李攀　王丽娟

摘要：探究树脂材料SureFil SDR在预防性树脂充填中的应用价值。选择窝沟封闭剂、Z350XT流体树脂、SureFil SDR 3种材料，将其制备为规格为8 mm×2 mm×2 mm的长方体试件及规格为8 mm×8 mm×2 mm的圆柱体试件，每种材料共5个，对3种试件耐磨性、细菌粘附性、抗折性进行分析，并对比差异性。结果表明：SureFil SDR组表面显微硬度高于窝沟封闭剂组、Z350XT流体树脂组，质量损失量低于窝沟封闭剂组、Z350XT流体树脂组，且差异显著（P<0.05）;耐磨性试验显示SureFil SDR组较其他2组磨损较轻;SureFil SDR组粗糙度、细菌粘附量均低于窝沟封闭剂组、Z350XT流体树脂组，且差异显著（P<0.05）;SureFil SDR组3点弯曲强度均高于窝沟封闭剂组、Z350XT流体树脂组，且差异显著（P<0.05）。

关键词：树脂材料;SureFil SDR;预防性树脂充填;细菌粘附性;抗折性;应用价值

中图分类号：TQ320.4

文献标识码：A文章编号：1001-5922（2022）06-0064-05

Application study of resin material SureFil SDR in preventive resin filling

NING Hongliang， YANG Hongzhen， LIU Yanan， FENG Liang， LI Pan， WANG Lijuan

（Baoding First Central Hospital facial Department， Baoding 071000， Hebei China

）

Abstract：This paper explored the application value of resin material SureFil SDR in preventive resin filling. Cavity and groove sealant， Z350XT fluid resin and SureFil SDR were selected to prepare cuboid specimens with specifications of 8 mm×2 mm×2 mm and cylinder specimens with specifications of 8 mm×8 mm×2 mm. There were 5 specimens of each material. The wear resistance， bacterial adhesion and flexural resistance of the 3 specimens were analyzed and compared. Results showed that the surface microhardness of SureFil SDR was higher than groove and Z350XT fluid resin， the mass loss was lower than that of groove sealing agent group and Z350XT fluid resin group with statistical significant difference （P<0.05）， and the wear resistance test showed that the SureFil SDR group had less wear than the other two groups. The roughness and bacterial adhesion amount of SureFil SDR group were lower than those of fossa and groove sealant group and Z350XT fluid resin group with statistical significant difference （P<0.05）. The three-point bending strength in the SureFil SDR group was higher than that in groove sealing group and Z350XT fluid resin group with statistical significant difference （P<0.05）.

Key words：resin materials; SureFil SDR; preventive resin filling; bacterial adhesion; folding resistance; application value

作為临床治疗窝沟龋的常见手段，预防性树脂充填主要指的是仅对窝沟处病变牙釉质去除、对早期窝沟龋予以树脂材料充填的过程，其能够对患者健康牙体组织尽可能多的予以保留，降低窝沟龋复发率，提高患者生活质量[1]。随着近年来预防性树脂充填在临床应用的增多，充填材料的抗菌性能、耐磨性得到了关注。研究报道，若菌斑黏附在充填材料上，不仅会引起继发龋，而且会导致充填物脱落，因此在充填材料选择方面多采用的是性能好、不易黏附菌斑且耐磨性好的材料。传统在预防性树脂充填中多选择窝沟封闭剂，其机械性能不佳，容易折断，且边缘封闭效果差，治疗效果得不到预期。……