title: Adhesion of Streptococci to various orthodontic composite resins.
abstract: BACKGROUND
  This investigation aimed to determine quantitatively the adhesion of Streptococcus mutans and Streptococcus sobrinus to orthodontic composite resins that were tested simultaneously using radio-markers.
  
  
  METHODS
  Seven orthodontic composite resins were classified into seven groups: BeautyOrtho Bond (GI), Blugloo (GII), Enlight (GIII), Grengloo (GIV), Kurasper F (GV), Transbond CC (GVI) and Turbo Bond II (GVII). Thirty 4 x 4 x 1 mm blocks of each orthodontic composite resin were made (a total of 210 blocks). Both Streptococcus species were cultivated independently. For the quantitative analysis, radioactive markers were used to codify the bacteria ((3) H for Streptococcus mutans and (14) C for Streptococcus sobrinus). The blocks were submerged in a solution with microorganisms previously radiolabelled for 2 hours at 37 °C in constant movement. The blocks were placed in a combustion system to quantify the Streptococcus adhering to the surface of the materials by capturing the residues and measuring the radiation.
  
  
  RESULTS
  Significant differences in bacterial adhesion were found among the groups. The lowest significant scores for both microorganisms were observed in GIII.
  
  
  CONCLUSIONS
  The orthodontic composite resin evaluated in GIII exhibited the lowest adhesion of Streptococcus mutans and Streptococcus sobrinus, which may reduce enamel demineralization and the risk of white spot lesion formation.
authors: Health Sciences, School of Medicine, Autonomous University State of Mexico, Toluca City, Mexico.
authors: U
authors: U
authors: Velazquez-Enriquez
authors: R J
authors: RJ
authors: Scougall-Vilchis
authors: R
authors: R
authors: Contreras-Bulnes
authors: J
authors: J
authors: Flores-Estrada
authors: S
authors: S
authors: Uematsu
authors: R
authors: R
authors: Yamaguchi
mesh_terms: D000180:Acrylic Resins; D001422:Bacterial Adhesion; D017438:Bisphenol A-Glycidyl Methacrylate; D003188:Composite Resins; D003743:Dental Enamel; D010756:Phosphoric Acids; D019279:Resin Cements; D013295:Streptococcus mutans / Q000502:physiology*; D016986:Streptococcus sobrinus / Q000502:physiology*; D017001:Tooth Demineralization / Q000382:microbiology / Q000517:prevention & control
chemical_list: D000180:Acrylic Resins; C522883:Blugloo; D003188:Composite Resins; C418867:Enlight; C472990:Kurasper F; D010756:Phosphoric Acids; D019279:Resin Cements; C065742:Transbond; D017438:Bisphenol A-Glycidyl Methacrylate