title: Effects of Additional Acid Etching on the Dentin Bond Strengths of One-Step Self-Etch Adhesives Applied to Primary Teeth.
abstract: OBJECTIVE
  The aim of this study was to evaluate the bond strengths of one-step self-etch adhesives applied to primary tooth dentin with and without additional acid etching.
  
  
  METHODS
  In total, 154 specimens were prepared using 50 naturally exfoliated primary molars. Four commercial one-step self-etch adhesives were used in this study: Scotchbond™ Universal, All-Bond Universal™, Adper™ Prompt™ L-Pop™, and Clearfil S3 Bond™. Two etch-and-rinse adhesives, Prime & Bond® NT™ and Scotchbond™ Multi-Purpose, served as controls. Microtensile bond strength tests were performed for specimens treated with the one-step self-etch adhesives with and without additional acid etching and those treated with the two etch-and-rinse adhesives.
  
  
  RESULTS
  All one-step self-etch adhesives except Adper Prompt L-Pop exhibited increased microtensile bond strength values (p < 0.05) with additional acid etching. A nonsignificant interaction was observed between the type of self-etch adhesive and additional acid etching (p = 0.056). Bond strength comparisons between the self-etch adhesives used without additional acid etching and the etch-and-rinse adhesives revealed significantly higher values for Prime & Bond NT than for All-Bond Universal®(p < 0.05). However, there were no significant differences between any etch-and-rinse adhesive and self-etch adhesive used with additional acid etching, although Clearfil S3 Bond showed greater strength than Adper Prompt L-Pop.
  
  
  CONCLUSIONS
  Our results suggest that additional acid etching increases the bond strength of most one-step self-etch adhesives applied to primary tooth dentin.
  
  
  CONCLUSIONS
  Additional acid etching of enamel and dentin can be recommended to increase the bond strength of one-step self-etch adhesives applied to primary teeth. (J Esthet Restor Dent 29:110-117, 2017).
authors.affiliation: Department of Pediatric Dentistry and Institute of Transitional Dental Sciences, School of Dentistry, Pusan National University & Dental Research Institute of Pusan National University Dental Hospital, Yangsan, Republic of Korea.
authors.forename: Yuhyun
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Department of Pediatric Dentistry and Institute of Transitional Dental Sciences, School of Dentistry, Pusan National University & Dental Research Institute of Pusan National University Dental Hospital, Yangsan, Republic of Korea.
authors.forename: Shin
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Pediatric Dentistry and Institute of Transitional Dental Sciences, School of Dentistry, Pusan National University & Dental Research Institute of Pusan National University Dental Hospital, Yangsan, Republic of Korea.
authors.forename: Taesung
authors.initials: T
authors.lastname: Jeong
authors.affiliation: Department of Conservative Dentistry and Institute of Transitional Dental Sciences, School of Dentistry, Pusan National University & Dental Research Institute of Pusan National University Dental Hospital, Yangsan, Republic of Korea.
authors.forename: Sung-Ae
authors.initials: SA
authors.lastname: Son
authors.affiliation: Department of Pediatric Dentistry and Institute of Transitional Dental Sciences, School of Dentistry, Pusan National University & Dental Research Institute of Pusan National University Dental Hospital, Yangsan, Republic of Korea.
authors.forename: Jiyeon
authors.initials: J
authors.lastname: Kim
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry*; D003804:Dentin / Q000737:chemistry*; D006801:Humans; D013718:Tensile Strength; D014094:Tooth, Deciduous
chemical_list: D003738:Dental Cements