title: Scanning electron microscope appearance of the enamel/composite/bracket areas using different methods of surface enamel treatment, composite mix and bracket loading.
abstract: Minimal plaque retention on and around orthodontic brackets is of paramount importance if iatrogenic tooth damage is to be avoided. This study made use of the scanning electron microscope to examine how variations in composite mix and finishing affected the smoothness and adaptation at the bracket, composite, and enamel interfaces. The study indicated that the optimum choice for good composite/enamel adaptation with a smooth composite surface and good composite/bracket adaptation involves the use of an intermediate unfilled resin layer, a paste/liquid mix of composite placed on a bracket which is optimally loaded, and no excess composite removed with an instrument.
authors.affiliation: Department of Child Dental Health, University of Wales College of Medicine, Dental School, Heath Park, Cardiff.
authors.forename: R G
authors.initials: RG
authors.lastname: Oliver
authors.forename: G S
authors.initials: GS
authors.lastname: Howe
mesh_terms: D000134:Acid Etching, Dental; D000180:Acrylic Resins; D017438:Bisphenol A-Glycidyl Methacrylate; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003188:Composite Resins; D001840:Dental Bonding / Q000379:methods*; D003743:Dental Enamel / Q000648:ultrastructure*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D009967:Orthodontic Appliances; D011109:Polymethacrylic Acids; D013314:Stress, Mechanical; D013499:Surface Properties; D014783:Viscosity
chemical_list: D000180:Acrylic Resins; D003188:Composite Resins; D011109:Polymethacrylic Acids; D017438:Bisphenol A-Glycidyl Methacrylate