Chinese Medical Sciences Journal ›› 2012, Vol. 27 ›› Issue (2): 106-111.

• Original Article • 上一篇    下一篇

Multiple Coatings can Improve the Bond Durability of One-step Self-etching Adhesive to Primary Dentin

Lin Ma1, Jian-feng Zhou2, Quan Jing1, Ji-zhi Zhao1, and Kuo Wan1*   

  1. 1Department of Stomatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
    2Department of Prosthodontics, Peking University School & Hospital of Stomatology, Beijing 100081, China
  • 收稿日期:2012-07-05 修回日期:2012-07-05 出版日期:2012-07-05 发布日期:2012-07-05
  • 作者简介:*Corresponding author Tel: 86-10-69155256, E-mail: wankuo@yahoo.com.cn

Multiple Coatings can Improve the Bond Durability of One-step Self-etching Adhesive to Primary Dentin

Lin Ma1, Jian-feng Zhou2, Quan Jing1, Ji-zhi Zhao1, and Kuo Wan1*   

  1. 1Department of Stomatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
    2Department of Prosthodontics, Peking University School & Hospital of Stomatology, Beijing 100081, China
  • Received:2012-07-05 Revised:2012-07-05 Published:2012-07-05 Online:2012-07-05

摘要: Objective To investigate whether multiple coatings can improve the bond durability of one-step self-etching adhesive to primary dentin.
Methods Twelve caries-free human primary molars were randomly divided into 2 groups. In group 1, each tooth was hemisected into 2 halves. One half was assigned to the control subgroup 1, which was bonded with a commercially available one-step self-etching adhesive according to the manufacturer’s instructions; the other half was assigned to experimental subgroup 1, in which the adhesive was applied three times before light curing. In group 2, one split half tooth was bonded with a commercially available one-step self-etching adhesive according to the manufacturer’s instructions; for the other half, three layers of adhesive were applied with each successive layer of light curing. Specimens were stored in 0.9% NaCl containing 0.02% sodium azide at 37℃ for 18 months and then were subjected to microtensile bond strength test and the fracture mode analysis.
Results When the adhesive was applied three times before light curing, the bond strength of the experimental subgroup 1 was significantly higher than that of the control subgroup 1 (47.46±13.91 vs. 38.12±11.21 MPa, P0.05).
Conclusion Multiple coatings can improve the bond durability of one-step self-etching adhesive to primary dentin when using the technique of light-curing after applying 3 layers of adhesive.

关键词: self-etching adhesive, microtensile bond strength test, primary dentin, multiple coatings

Abstract: Objective To investigate whether multiple coatings can improve the bond durability of one-step self-etching adhesive to primary dentin.
Methods Twelve caries-free human primary molars were randomly divided into 2 groups. In group 1, each tooth was hemisected into 2 halves. One half was assigned to the control subgroup 1, which was bonded with a commercially available one-step self-etching adhesive according to the manufacturer’s instructions; the other half was assigned to experimental subgroup 1, in which the adhesive was applied three times before light curing. In group 2, one split half tooth was bonded with a commercially available one-step self-etching adhesive according to the manufacturer’s instructions; for the other half, three layers of adhesive were applied with each successive layer of light curing. Specimens were stored in 0.9% NaCl containing 0.02% sodium azide at 37℃ for 18 months and then were subjected to microtensile bond strength test and the fracture mode analysis.
Results When the adhesive was applied three times before light curing, the bond strength of the experimental subgroup 1 was significantly higher than that of the control subgroup 1 (47.46±13.91 vs. 38.12±11.21 MPa, P0.05).
Conclusion Multiple coatings can improve the bond durability of one-step self-etching adhesive to primary dentin when using the technique of light-curing after applying 3 layers of adhesive.

Key words: self-etching adhesive, microtensile bond strength test, primary dentin, multiple coatings

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