Effect of adhesive hydrophobicity on microtensile bond strength of low-shrinkage silorane resin to dentin.
10.5395/JKACD.2011.36.4.280
- Author:
So Yeun CHO
1
;
Hyun Young KANG
;
Kyoung A KIM
;
Mi Kyung YU
;
Kwang Won LEE
Author Information
1. Department of Conservative Dentistry, Jeonbuk National University School of Dentistry, Jeonju, Korea. lkw@jbnu.ac.kr
- Publication Type:Original Article ; Randomized Controlled Trial
- Keywords:
Adhesive hydrophobicity;
Dentin bonding system;
Microtensile bond strength;
Silorane resin;
Water sorption test
- MeSH:
Adhesives;
Crowns;
Dentin;
Humans;
Hydrophobic and Hydrophilic Interactions;
Methacrylates;
Molar, Third;
Phosphoric Acids;
Resin Cements;
Silorane Resins;
Tooth;
Water
- From:Journal of Korean Academy of Conservative Dentistry
2011;36(4):280-289
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: The purpose of this study was to evaluate microTBS (microtensile bond strength) of current dentin bonding adhesives which have different hydrophobicity with low-shrinkage silorane resin. MATERIALS AND METHODS: Thirty-six human third molars were used. Middle dentin was exposed. The teeth were randomly assigned to nine experimental groups: Silorane self-etch adhesives (SS), SS + phosphoric acid etching (SS + pa), Adper easy bond (AE), AE + Silorane system bonding (AE + SSb), Clearfil SE bond (CSE), CSE + SSb, All-Bond 2 (AB2), AB2 + SSb, All-Bond 3 (AB3). After adhesive's were applied, the clinical crowns were restored with Filtek LS (3M ESPE). The 0.8 mm x 0.8 mm sticks were submitted to a tensile load using a Micro Tensile Tester (Bisco Inc.). Water sorption was measured to estimate hydrophobicity adhesives. RESULTS: microTBS of silorane resin to 5 adhesives: SS, 23.2 MPa; CSE, 19.4 MPa; AB3, 30.3 MPa; AB2 and AE, no bond. Additional layering of SSb: CSE + SSb, 26.2 MPa; AB2 + SSb, 33.9 MPa; AE + SSb, no bond. High value of microTBS was related to cohesive failure. SS showed the lowest water sorption. AE showed the highest solubility. CONCLUSIONS: The hydrophobicity of adhesive increased, and silorane resin bond-strength was also increased. Additional hydrophobic adhesive layer did not increase the bond-strength to silorane resin except AB2 + SSb. All-Bond 3 showed similar microTBS & water sorption with SS. By these facts, we could reach a conclusion that All-Bond 3 is a competitive adhesive which can replace the Silorane adhesive system.
