title: [Evaluation of shear bond strengths of self-etching and total-etching dental adhesives to enamel and dentin].
abstract: OBJECTIVE
  To evaluate the shear bond strengths of four dental adhesives in vitro.
  
  
  METHODS
  The facial surfaces of 20 human maxillary incisors were prepared to expose fresh enamel and randomly divided into four groups, in each group 5 teeth were bonded with one adhesives: group A (Clearfil Protect Bond, self-etching two steps), group B (Adper( Prompt, self-etching one step), group C (SwissTEC SL Bond, total-etching two steps), group D (Single Bond, total-etching two steps). Shear bond strengths were determined using an universal testing machine after being stored in distilled water for 24 h at 37 degrees C.
  
  
  RESULTS
  The bond strengths to enamel and dentin were (25.33 +/- 2.84) and (26.07 +/- 5.56) MPa in group A, (17.08 +/- 5.13) and (17.93 +/- 4.70) MPa in group B, (33.14 +/- 6.05) and (41.92 +/- 6.25) MPa in group C, (22.51 +/- 6.25) and (21.45 +/- 7.34) MPa in group D. Group C showed the highest and group B the lowest shear bond strength to enamel and dentin among the four groups.
  
  
  CONCLUSIONS
  The two-step self-etching adhesive showed comparable shear bond strength to some of the total-etching adhesives and higher shear bond strength than one-step self-etching adhesive.
authors: Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors: Ling
authors: L
authors: Yu
authors: Jing-Ming
authors: JM
authors: Liu
authors: Xiao-Yan
authors: XY
authors: Wang
authors: Xue-Jun
authors: XJ
authors: Gao
mesh_terms: D000134:Acid Etching, Dental; D001840:Dental Bonding; D003738:Dental Cements; D003799:Dental Stress Analysis; D003804:Dentin; D006801:Humans; D033081:Shear Strength
chemical_list: D003738:Dental Cements