title: Adherence of Streptococcus mutans to orthodontic band cements.
abstract: BACKGROUND
  The aim of this study was to quantitatively determine the adherence of Streptococcus mutans to orthodontic band cements.
  
  
  METHODS
  Two hundred and ten blocks of seven different band cements for orthodontic prescription were made using a Teflon mould (4 × 4 × 1 mm). The obtained blocks were slightly polished and cleansed ultrasonically. Certified S. mutans ATCC 25175 were cultured with conventional methods for growth in Petri dishes and trypticase soy broth. Quantitative analysis was carried out with radioactive markers to codify the bacteria ((3) H). Subsequently, a combustion system was used to capture the residues, the radioactivity of the samples was measured, and the values recorded in disintegrations per minute (dpm). One-way analysis of variance (ANOVA) with a Scheffé test for multiple comparisons was realized with a significance level of ≤0.05.
  
  
  RESULTS
  Significant differences were found among different band cement materials (p < 0.001). Two band cement materials showed statistically lower values than the others (Transbond Plus Band Cem and Ketac Cem). In contrast, GC Fuji Ortho Band presented the highest adherence of S. mutans.
  
  
  CONCLUSIONS
  Among the cements evaluated, Transbond Plus Band Cem and Ketac Cem showed lower adherence of S. mutans.
authors.affiliation: Autonomous University State of Mexico, Toluca, Mexico.
authors.forename: J C
authors.initials: JC
authors.lastname: Gonzalez-Perez
authors.forename: R J
authors.initials: RJ
authors.lastname: Scougall-Vilchis
authors.forename: R
authors.initials: R
authors.lastname: Contreras-Bulnes
authors.forename: I
authors.initials: I
authors.lastname: De La Rosa-Gómez
authors.forename: S
authors.initials: S
authors.lastname: Uematsu
authors.forename: R
authors.initials: R
authors.lastname: Yamaguchi
mesh_terms: D000180:Acrylic Resins; D000538:Aluminum Silicates; D000704:Analysis of Variance; D001422:Bacterial Adhesion / Q000502:physiology*; D017438:Bisphenol A-Glycidyl Methacrylate; D003738:Dental Cements; D005899:Glass Ionomer Cements; D008277:Magnesium Oxide; D011076:Polycarboxylate Cement; D019279:Resin Cements; D013295:Streptococcus mutans / Q000502:physiology*; D015034:Zinc Oxide
chemical_list: D000180:Acrylic Resins; D000538:Aluminum Silicates; D003738:Dental Cements; C112133:Fuji Ortho; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D019279:Resin Cements; C065742:Transbond; D008277:Magnesium Oxide; D017438:Bisphenol A-Glycidyl Methacrylate; C040235:Ketac-cem; D015034:Zinc Oxide