title: In vitrostudy ofStreptococcus mutansadhesion on composite resin coated with three surface sealants.
abstract: OBJECTIVE
  Although the coating of surface sealants to dental composite resin may potentially reduce bacterial adhesion, there seems to be little information regarding this issue. This preliminaryin vitrostudy investigated the adhesion ofStreptococcus mutans(S. mutans) on the dental composite resins coated with three commercial surface sealants.
  
  
  METHODS
  Composite resin (Filtek Z250) discs (8 mm in diameter, 1 mm in thickness) were fabricated in a mold covered with a Mylar strip (control). In group PoGo, the surfaces were polished with PoGo. In groups PS, OG, and FP, the surfaces polished with PoGo were coated with the corresponding surface sealants (PermaSeal, PS; OptiGuard, OG; Fortify Plus, FP). The surfaces of the materials andS. mutanscells were characterized by various methods.S. mutansadhesion to the surfaces was quantitatively evaluated using flow cytometry (n= 9).
  
  
  RESULTS
  Group OG achieved the lowest water contact angle among all groups tested (p< 0.001). The cell surface ofS. mutanstested showed hydrophobic characteristics. Group PoGo exhibited the greatest bacterial adhesion among all groups tested (p< 0.001). The sealant-coated groups showed statistically similar (groups PS and FP,p> 0.05) or significantly lower (group OG,p< 0.001) bacterial adhesion when compared with the control group.
  
  
  CONCLUSIONS
  The application of the surface sealants significantly reducedS. mutansadhesion to the composite resin polished with the PoGo.
authors.affiliation: Department of Medical and Biological Engineering, Graduate School, Daegu, Korea.
authors.forename: Da Hye
authors.initials: DH
authors.lastname: Kim
authors.affiliation: Department of Dental Biomaterials, School of Dentistry, Daegu, Korea.; Institute for Biomaterials Research and Development, Kyungpook National University, Daegu, Korea.
authors.forename: Tae-Yub
authors.identifier: 0000-0002-9998-3099
authors.initials: TY
authors.lastname: Kwon
keywords: Composite resins; Streptococcus mutans; Surface properties