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Materials 2015, 8(6), 3221-3237; doi:10.3390/ma8063221

Structural, Surface, in vitro Bacterial Adhesion and Biofilm Formation Analysis of Three Dental Restorative Composites

1
Interdisciplinary Research Centre in Biomedical Materials, COMSATS Institute of Information Technology, Lahore 54000, Pakistan
2
Faculty of Dentistry, SEGi University, Kota Damansara, Petaling Jaya 47810, Malaysia
3
Department of Biosciences, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan
4
The Centre for Advanced Studies in Physics, Government College University, Lahore 54000, Pakistan
5
Department of Materials Science and Engineering, the Kroto Research Institute, the University of Sheffield, Sheffield S3 7HQ, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Georgios E. Romanos
Received: 30 January 2015 / Revised: 19 May 2015 / Accepted: 22 May 2015 / Published: 3 June 2015
(This article belongs to the Special Issue Dental Materials)
View Full-Text   |   Download PDF [4408 KB, uploaded 3 June 2015]   |  

Abstract

This study was conducted to investigate the relationship between dental materials and bacterial adhesion on the grounds of their chemical composition and physical properties. Three commercially available dental restorative materials (Filtek™Z350, Filtek™P90 and Spectrum®TPH®) were structurally analyzed and their wettability and surface roughness were evaluated by using Fourier Transform Infrared Spectroscopy, Contact Angle Measurement and Atomic Force Microscopy, respectively. These materials were molded into discs and tested with three bacterial strains (Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia) for microbial attachment. The bacterial adhesion was observed at different time intervals, i.e., 0 h, 8 h, 24 h, 48 h and 72 h, along with Colony Forming Unit Count and Optical Density measurement of the media. It was found that all materials showed a degree of conversion with time intervals, i.e., 0 h, 8 h, 24 h, 48 h and 72 h, which led to the availability of functional groups (N–H and C–H) that might promote adhesion. The trend in difference in the extent of bacterial adhesion can be related to particle size, chemical composition and surface wettability of the dental materials. View Full-Text
Keywords: dental composites; spectroscopic analysis; bacterial adhesion; wettability; surface properties dental composites; spectroscopic analysis; bacterial adhesion; wettability; surface properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Azam, M.T.; Khan, A.S.; Muzzafar, D.; Faryal, R.; Siddiqi, S.A.; Ahmad, R.; Chauhdry, A.A.; Rehman, I.U. Structural, Surface, in vitro Bacterial Adhesion and Biofilm Formation Analysis of Three Dental Restorative Composites. Materials 2015, 8, 3221-3237.

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