Durability of Resin-Dentin Bonds to Water- vs. Ethanol-saturated Dentin

Author:

Hosaka K.12345,Nishitani Y.12345,Tagami J.12345,Yoshiyama M.12345,Brackett W.W.12345,Agee K.A.12345,Tay F.R.12345,Pashley D.H.12345

Affiliation:

1. Cariology and Operative Dentistry, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan;

2. Department of Operative Dentistry, Okayama University, Graduate School of Medicine and Dentistry, Okayama, Japan;

3. Department of Oral Rehabilitation,

4. Department of Oral Biology, and

5. Department of Endodontics, School of Dentistry, Medical College of Georgia, Augusta, GA 30912-1129, USA

Abstract

Higher 24-hour resin-dentin bond strengths are created when ethanol is used to replace water during wet bonding. This in vitro study examined if ethanol-wet-bonding can increase the durability of resin-dentin bonds over longer times. Five increasingly hydrophilic experimental resin blends were bonded to acid-etched dentin saturated with water or ethanol. Following composite build-ups, the teeth were reduced into beams for 24-hour microtensile bond strength evaluation, and for water-aging at 37°C for 3, 6, or 12 months before additional bond strength measurements. Although most bonds made to water-saturated dentin did not change over time, those made to ethanol-saturated dentin exhibited higher bond strengths, and none of them fell over time. Decreased collagen fibrillar diameter and increased interfibrillar spacing were seen in hybrid layers created with ethanol-wet-bonding. Increases in bond strength and durability in ethanol-wet-bonding may be due to higher resin uptake and better resin sealing of the collagen matrix, thereby minimizing endogenous collagenolytic activities.

Publisher

SAGE Publications

Subject

General Dentistry

Reference36 articles.

1. Armstrong SR, Vargas MA, Chung I, Pashley DH, Campbell JA, Laffoon JE, et al. -2004- Resin-dentin interfacial ultrastructure and microtensile dentin bond strength after five-year water storage. Oper Dent 29:705–712.

2. Solubility Parameters, Fractional Polarities, and Bond Strengths of Some Intermediary Resins Used in Dentin Bonding

3. Influence of the Solubility Parameter of Intermediary Resin on the Effectiveness of the Gluma Bonding System

4. Carrilho MRO, Carvalho RM, Tay FR, Yiu C, Pashley DH -2005- Durability of resin-dentin bonds related to water and oil storage. Am J Dent 18:315–319.

5. Effects of HEMA/Solvent Combinations on Bond Strength to Dentin

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