title: Influence of different resin-based restorative materials on mutans streptococci adhesion. An in vitro study.
abstract: OBJECTIVE
  To investigate the surface roughness and the initial adhesion of Streptococcus mutans on seven dental resin-based restorative materials.
  
  
  METHODS
  Five cylinder specimens, with 5 mm diameter and 3 mm height, of three resin composites (Z100, Prodigy and Tetric), three polyacid modified composite resins (Compoglass, Compoglass F and Dyract AP) and a resin modified glass ionomer (Vitremer) were made. Materials were handled following manufacturer's instructions. The materials were polished up to 1200 grit SiC abrasive paper under running water in an automatic polisher. Surface roughness measurements were carried out by a profilometer. Five diametrical measurements were made and Ra was calculated in microm. The bacterial initial cell adhesion assay was performed with S. mutans ATCC 25175. The initial adhesion of Streptococcus mutans on the materials tested was observed by SEM. ANOVA and Student-Newman-Keuls multiple comparisons were used.
  
  
  RESULTS
  The statistical analyses showed no significant differences in initial cell adhesion among tested materials, even when the resin-modified glass inonomer showed a rougher surface than the rest of the materials.
authors.affiliation: Department of Dental Materials, University of Granada, Spain. meosorio@ugr.es
authors.forename: Estrella
authors.initials: E
authors.lastname: Osorio
authors.forename: Raquel
authors.initials: R
authors.lastname: Osorio
authors.forename: Manuel
authors.initials: M
authors.lastname: Toledano
authors.forename: Jorgina
authors.initials: J
authors.lastname: Quevedo-Sarmiento
authors.forename: Alfonso
authors.initials: A
authors.lastname: Ruiz-Bravo
mesh_terms: D000704:Analysis of Variance; D001422:Bacterial Adhesion / Q000187:drug effects*; D020770:Compomers / Q000494:pharmacology; D003188:Composite Resins / Q000737:chemistry / Q000494:pharmacology*; D003793:Dental Restoration, Permanent / Q000379:methods*; D005899:Glass Ionomer Cements / Q000494:pharmacology; D008422:Materials Testing; D018709:Statistics, Nonparametric; D013295:Streptococcus mutans / Q000187:drug effects*; D013499:Surface Properties
chemical_list: D020770:Compomers; D003188:Composite Resins; D005899:Glass Ionomer Cements