[Microtensile bond strengths of one-step self-etching adhesive systems].
OBJECTIVE
To evaluate the microtensile bond strength of one-step self-etching adhesives to dentin in vitro.


METHODS
Three commercially available one-step self-etching bonding systems (group A: Adper Prompt, group B: Clearfil S(3) Bond, group C: Xeno III) were compared with two-step self-etching adhesive (group D: Clearfil SE Bond) in this study. The microtensile bond strength was determined with microtensile tester and the fractured bonding surfaces were observed under stereomicroscope and scanning electronic microscope (SEM). The mean bond strengths were analyzed using one-way ANOVA test (P < 0.05).


RESULTS
Mean microtensile bond strengths of group C, B, A and D were (34.59 +/- 3.46), (30.46 +/- 3.82), (23.36 +/- 2.55) and (45.06 +/- 5.29) MPa, respectively. Group D showed the highest bond strength (P < 0.01).


CONCLUSIONS
Two-step self-etching adhesive had a higher bond strength than one-step self-etching adhesive systems, although all of them can satisfy the clinical requirements.
Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Ling
L
Yu
Xiao-yan
XY
Wang
Fu-cong
FC
Tian
Xue-jun
XJ
Gao
D017438:Bisphenol A-Glycidyl Methacrylate; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D006801:Humans; D010755:Organophosphates; D019279:Resin Cements; D013718:Tensile Strength
C489661:Adper Prompt Self-Etch; C505694:Clearfil S3 Bond; C438313:Clearfil SE Bond; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D010755:Organophosphates; D019279:Resin Cements; C487957:Xeno III; D017438:Bisphenol A-Glycidyl Methacrylate