Streptococcus mutans biofilm changes surface-topography of resin composites

被引：130

作者：

Beyth, Nurit ^{[1
]}

Bahir, Ran ^{[1
]}

Matalon, Shlomo ^{[1
]}

Domb, Abraham J. ^{[2
,3
]}

Weiss, Ervin I. ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Fac Dent, Dept Prosthodont, Jerusalem, Israel

[2] Hebrew Univ Jerusalem, Sch Pharm, Fac Med, Dept Med Chem, IL-91120 Jerusalem, Israel

[3] Hebrew Univ Jerusalem, Sch Pharm, Fac Med, Dept Nat Prod, IL-91120 Jerusalem, Israel

来源：

DENTAL MATERIALS | 2008年 / 24卷 / 06期

关键词：

resin composites; biofilm; Streptococcus mutans; surface-topography;

D O I：

10.1016/j.dental.2007.08.003

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Objectives. Polymerized resin composites and nonpolymerized monomers are reported to accelerate bacterial growth. Furthermore, in vivo, resin composite restorations accumulate more plaque than other restorative materials. The purpose of this study was to test the hypothesis that bacteria-composite surface interaction causes changes in surface-topography. Methods. Resin composite disks were polymerized between two glass slides. Streptococcus mutans cells were brought in contact with and grown on the disks for 1 day, 1 week or 1 month. The disks were analyzed using atomic force microscopy. One-month-aged composite specimens were assayed for changes in micro-hardness and bacterial outgrowth. Results. Atomic force microscopy analysis revealed a time-dependent increase in root mean square (RMS) roughness (p < 0.0001). S. mutans outgrowth was accelerated following direct contact with the surface of aged composites, with no changes in micro-hardness. Significance. Our results show that S. mutans growth on resin composite increases surface roughness without affecting micro-hardness. The change in surface integrity may further accelerate biofilm accumulation. (C) 2007 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

引用

页码：732 / 736

页数：5

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