Feb, 2009
Durability of Resin-Dentin Bonds to Water-vs. Ethanol-saturated Dentin
JOURNAL OF DENTAL RESEARCH
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- Volume
- 88
- Number
- 2
- First page
- 146
- Last page
- 151
- Language
- English
- Publishing type
- DOI
- 10.1177/0022034508328910
- Publisher
- SAGE PUBLICATIONS INC
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 degrees 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.
- Link information
- ID information
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- DOI : 10.1177/0022034508328910
- ISSN : 0022-0345
- Web of Science ID : WOS:000263913000008