title: Microbial growth on the surfaces of various orthodontic bonding cements.
abstract: An experimental technique was developed to examine the adhesion of a strain of Streptococcus mutans to the surface of discs of selected orthodontic bonding composites and a glass ionomer cement. Colonization by the bacterium was assessed by weight gain and scanning electron microscopy. Initial colonization occurred after about 3 days, and the specimens were usually completely covered by the fourth day. There were statistically significant differences between materials for weight gain, a strong correlation between weight gain and surface free energy of the materials measured as droplet contact angle (r = 0.9) and a moderate correlation between weight gain and surface roughness (r = 0.6).
authors.affiliation: Department of Child Dental Health, Dental School, Health, Cardiff.
authors.forename: R E
authors.initials: RE
authors.lastname: Blunden
authors.forename: R G
authors.initials: RG
authors.lastname: Oliver
authors.forename: C O
authors.initials: CO
authors.lastname: O'Kane
mesh_terms: D001422:Bacterial Adhesion; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003738:Dental Cements / Q000737:chemistry*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005899:Glass Ionomer Cements / Q000737:chemistry*; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D009967:Orthodontic Appliances; D019279:Resin Cements; D012822:Silicon Dioxide / Q000737:chemistry; D013295:Streptococcus mutans / Q000254:growth & development*; D013499:Surface Properties; D014099:Toothbrushing; D017155:Wettability
chemical_list: C074864:All-Bond system; D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D008689:Methacrylates; D019279:Resin Cements; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide; C073908:Unite resin