Document Detail


Influence of surface roughness on streptococcal adhesion forces to composite resins.
MedLine Citation:
PMID:  21524789     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: To determine streptococcal adhesion forces with composite resins with different surface roughness. METHODS: Polishing and grinding were applied to obtain smooth (roughness 20nm), moderately rough (150nm) and rough (350nm) surfaces of two orthodontic, light-cured composites. Adhesion forces between Streptococcus sanguinis and Streptococcus mutans and the composite surfaces were measured using atomic force microscopy in absence or presence of a salivary conditioning film. Initial adhesion forces were measured as well adhesion after 120s of contact, as longer contact times are known to result in stronger adhesion forces ("bond-strengthening"). Surface roughness in absence and presence of salivary conditioning films were compared using ANOVA, while adhesion forces were subjected to a Weibull analysis. RESULTS: Initial adhesion forces in absence of a salivary conditioning film amounted between -0.7 and -0.9nN for smooth composite resins and increased between -1.0 and -2.0nN for the roughest surfaces. Streptococcal adhesion forces after bond-strengthening were significantly stronger than upon initial contact, irrespective of the composite type. Salivary conditioning films significantly decreased the surface roughness of the composites, as well as the streptococcal adhesion forces. Yet, also in the presence of a conditioning film, rougher composite surfaces exerted stronger adhesion forces, irrespective of composite type or bacterial strain. CONCLUSION: Streptococcal adhesion forces to orthodontic composite resins increase with increasing roughness of the composite surfaces. Composite surface roughness less affects adhesion forces with S. mutans than with S. sanguinis.
Authors:
Li Mei; Henk J Busscher; Henny C van der Mei; Yijin Ren
Related Documents :
2301149 - Neonatal exposure to methyl chloroform in tape remover.
22893609 - Glycoarrays by a new tandem noncovalent-covalent modification of polystyrene microtiter...
22277619 - Assessment of bactericidal effects of quaternary ammonium-based antibacterial monomers ...
15565219 - Forensic isotope ratio mass spectrometry of packaging tapes.
19481889 - Hierarchical cluster analysis as a tool for preliminary discrimination of atr-ft-ir spe...
11046059 - Fibrin(ogen)-induced expression of icam-1 and chemokines in human synovial fibroblasts.
20091049 - Endothelium-derived contracting factors mediate the ang ii-induced endothelial dysfunct...
21645239 - Plasma membrane microdomains regulate tace-dependent tnfr1 shedding in human endothelia...
23364949 - Role of the endothelial-derived endogenous anti-inflammatory factor del-1 in inflammati...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-25
Journal Detail:
Title:  Dental materials : official publication of the Academy of Dental Materials     Volume:  -     ISSN:  1879-0097     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508040     Medline TA:  Dent Mater     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Department of Biomedical Engineering, University Medical Center Groningen and University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands; Department of Orthodontics, University Medical Center Groningen and University of Groningen, Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Wear performance of substructure ceramics and veneering porcelains.
Next Document:  Effect of fatigue on biaxial flexural strength of bilayered porcelain/zirconia (Y-TZP) dental cerami...