变形链球菌侵袭对4种复合树脂粘结界面老化的影响

doi:10.11839/kqyxzh.2016.01.021

摘要/Abstract

摘要： 目的:探讨变形链球菌侵袭对4种复合树脂粘结界面老化的影响。方法:选取2种大块充填复合树脂和2种传统复合树脂,将4种复合树脂材料试件浸入菌液内孵育14 d,之后对试件进行超声清洗,在体视显微镜下观察粘结面裂隙面积占总粘结面积的百分比,以了解粘结表面破坏情况;在每组中选取2个样本,使用离子溅射仪喷金,喷金后的标本用导电胶固定在标本台上,用扫描电镜观察对比4种材料粘结面破坏情况。结果:4种复合树脂在变形链球菌侵袭下具有不同形式的破坏,粘结破坏程度各组之间不存在显著差异,SDR对应的级别平均值最大,Z350稍微大于P60和Tetric N-Ceram Bulk Fill;P60与Tetric N-Ceram Bulk Fill,粘结面破坏均位于粘结面与牙本质间,树脂Z350和SDR裂隙产生在粘结面与树脂间。结论:变形链球菌在短期内可破坏复合树脂表面及粘结界面,成分不同破坏方式不同,破坏程度没有显著差异。

关键词: 复合树脂, 粘结界面, 抗菌能力, 变形链球菌

Abstract: Objective: To assess the effect of Streptococcus mutans invasion on the aging of four kinds of composite resin bonding interface. Methods: Two kinds of bulk-fill composite resins and two kinds of conventional composite resins were selected and immersed into bacterium solution for 14 days. After the specimen was subjected to ultrasonic cleaning, the bonding surface cracks were observed under a stereoscopic microscope, and the percentage of cracks areas were evaluated. Two samples in each group were then picked and sprayed using ion sputtering equipment. After fixed with conductive adhesives, the samples were observed under a scanning electron microscope. Results: Streptococcus mutans invasion led to different destruction of these composite resins bonding interface with no significant difference among the groups. According to the damage classification, SDR had the highest damage average, and the damage average of Z350 was slightly higher than that of P60 and Tetric N-Ceram Bulk Fill. The damage was located between the bonding surface and the dentin of P60 and Tetric N-Ceram Bulk Fill, while between the adhesive surface and the resin of Z350 and SDR. Conclusion: Streptococcus mutans can damage the surface and bonding interface of composite resin in a short time. Different resin components exhibited different failure modes, but showing no significant difference in the extent of damage.

中图分类号:

R781.05

王南燕. 变形链球菌侵袭对4种复合树脂粘结界面老化的影响[J]. 口腔医学研究, 2016, 32(1): 83-86.

WANG Nan-yan.. Effect of Streptococcus Mutans Invasion on the Aging of Four Kinds of Composite Resin Bonding Interface.[J]. Journal of Oral Science Research, 2016, 32(1): 83-86.

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