title: Bond strength of self-etching primer and total-etch adhesive systems to primary dentin.
abstract: OBJECTIVE
  The objective of this study was to assess in vitro the tensile bond strength of a self-etching and 2 total-etch, single-bottle adhesive systems to primary dentin.
  
  
  METHODS
  Thirty-six sound primary canine buccal surfaces were randomly assigned to 3 groups (N = 12), corresponding to the tested adhesive systems: (1) group I = Excite (EX); (2) group II = Single Bond (SB); and (3) group III = Prompt L-Pop (PLP). After 24-hour storage in distilled water, tensile bond strength was tested for failure at a crosshead speed of 0.5 mm/min.
  
  
  RESULTS
  Means (MPa) and standard deviation (+/-) were: (1) EX = 12.72 (+/- .89); (2) SB = 10.86 (+/- 2.09); (3) PLP = 8.66 (+/- 2.23). Single Bond and Excite showed statistically similar results (P >.05) and provided the highest means. Prompt L-Pop was statistically different from the other groups (P < .05) and reached the lower bond strength to primary dentin.
  
  
  CONCLUSIONS
  Total-etch agents provided the best overall bonding performance, whereas the all-in-one, self-etching, self-priming adhesive system yielded remarkably lower bond strength to primary teeth dentin.
authors.affiliation: Department of Pediatric Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo (USP), Ribeirão Preto-São Paulo, Brazil, carolptorres@hotmail.com
authors.forename: Carolina Paes
authors.initials: CP
authors.lastname: Torres
authors.forename: Silmara Aparecida Milori
authors.initials: SA
authors.lastname: Corona
authors.forename: Renata Pereira
authors.initials: RP
authors.lastname: Ramos
authors.forename: Regina Guenka
authors.initials: RG
authors.lastname: Palma-Dibb
authors.forename: Maria Cristina
authors.initials: MC
authors.lastname: Borsatto
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D017438:Bisphenol A-Glycidyl Methacrylate; D001840:Dental Bonding; D003799:Dental Stress Analysis; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D019279:Resin Cements; D013718:Tensile Strength; D014094:Tooth, Deciduous
chemical_list: D017220:Dentin-Bonding Agents; C420130:Excite cement; D008689:Methacrylates; C408584:Prompt L-Pop; D019279:Resin Cements; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate