Journal of Korean Dental Science

Korean Academy of Dental Science (대한치의학회)
권호 표지

Effect of Hydrophobic, Neutral Adhesive on the Dentin Bond Strength of Self-etching Adhesive

  • Bae, Ji-Hyun (Department of Conservative Dentistry, Section of Dentistry, Seoul National University Bundang Hospital) ;
  • Choi, Yong-Hoon (Department of Conservative Dentistry, Section of Dentistry, Seoul National University Bundang Hospital) ;
  • Jung, Moon-Kyung (Department of Conservative Dentistry, School of Dentistry and Dental Research Institute, Seoul National University) ;
  • Cho, Byeong-Hoon (Department of Conservative Dentistry, School of Dentistry and Dental Research Institute, Seoul National University)
  • Received : 2009.08.17
  • Accepted : 2009.09.16
  • Published : 2009.12.30
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Abstract

Objectives : This study investigated the hypothesis that the dentin bond strength of self-etching adhesives (SEAs) may be improved by applying a coat of hydrophobic, neutral adhesive resin in addition to SEA. Method and Materials : The bond strengths of two SEAs - Experimental SEA (EX) and Adper Prompt (AP) - were measured with three bonding protocols. The D/E resin of All-Bond 2 was applied as the hydrophobic, neutral adhesive. Clearfil SE Bond (SE, self-etching primer system) and All-Bond 2 (AB, total etching system) were used as references. The following protocols were used: (1) EX1 (EX 1 coat); (2) EX2 (EX 2 coats); (3) EX+ (EX 1 coat + D/E resin); (4) AP1 (AP 1 coat); (5) AP2 (AP 2 coats); (6) AP+ (AP 1 coat + D/E resin); (7) SE (SE primer + SE bond); (8) SE+ (SE primer + D/E resin); (9) AB (etching + AB primer + D/E resin). Filtek Z250 composite resin was built up and the microtensile bond strength (MTBS) values of the specimens were compared. The fractured surfaces were observed using SEM. Results : When SEA was used as self-etching primer and hydrophobic, neutral adhesive was applied as well, MTBS was significantly higher than that when either one coat or two coats of SEA only were used (p < 0.05). Conclusion : The hydrophobic, neutral adhesive improved the integrity of the bonded interface obtained with SEA.

Keywords

References

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