Effect of different finishing techniques for restorative materials on surface roughness and bacterial adhesion

Statement of problem The formation of biofilm and bacterial accumulation on dental materials may lead to the development of gingival inflammation and secondary caries. Purpose The purpose of this study was to examine the effect of different surface finishing and polishing methods on surface roughnes...

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Bibliographic Details
Published in:The Journal of prosthetic dentistry 2010-04, Vol.103 (4), p.221-227
Main Authors: Aykent, Filiz, DDS, PhD, Yondem, Isa, DDS, PhD, Ozyesil, Atilla G., DDS, PhD, Gunal, Solen K., DDS, PhD, Avunduk, Mustafa C., MD, Ozkan, Semiha, PhD
Format: Article
Language:English
Subjects:
Adhesion
Analysis of Variance
Bacteria
Bacterial Adhesion
Biofilms
Ceramics
Colony-forming cells
Composite Resins
Cutting
Data processing
Dental caries
Dental Pellicle
Dental Polishing - methods
Dental Porcelain
Dental Restoration, Permanent
Dentistry
Diamond machining
Gingiva
Inflammation
Lasers
Materials Testing
Microscopes
mucin
Pellicle
Polymers
Prosthetics
Regression Analysis
Resins
Rubber
Saliva
Statistics, Nonparametric
Streptococcus mutans - physiology
Surface Properties
Surface roughness
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Summary:Statement of problem The formation of biofilm and bacterial accumulation on dental materials may lead to the development of gingival inflammation and secondary caries. Purpose The purpose of this study was to examine the effect of different surface finishing and polishing methods on surface roughness and the adhesion of S. mutans bacteria to 2 new-generation indirect composite resins, 1 direct composite resin, and 1 ceramic material. Material and methods Forty specimens (10 × 10 × 2 mm) of each material, indirect composite resins (SR Adoro, Estenia), direct composite resin (Tetric), and a ceramic material (VITABLOCS Mark II), were fabricated. Specimens were divided into 4 groups (n=10) that were treated with 1 of the following 4 surface finishing techniques: diamond rotary cutting instrument, sandpaper discs (Sof-Lex), silicone-carbide rubber points (Shofu), or a felt wheel with diamond paste. Surface roughness was measured with a profilometer. Test specimens were covered with artificial saliva and mucin to produce pellicle. Bacterial suspension (109 CFU/ml) was then added to the pellicle-coated specimens, and bacterial adhesion was determined using a confocal laser microscope and image analyzing program. Data were analyzed with 2-way ANOVA, followed by Tukey HSD test, Pearson correlation, and regression analysis (α=.05). Results The highest surface roughness values were recorded in SR Adoro and diamond rotary cutting instrument groups. The lowest vital S. mutans adhesion was seen in the ceramic group and in SR Adoro indirect composite resin ( P
ISSN:0022-3913
1097-6841
DOI:10.1016/S0022-3913(10)60034-0