Bonding BisGMA to dentin - A proof of concept for hydrophobic dentin bonding

F. R. Tay; D. H. Pashley; R. R. Kapur; M. R.O. Carrilho; Y. B. Hur; L. V. Garrett; K. C.Y. Tay

doi:10.1177/154405910708601103

Bonding BisGMA to dentin - A proof of concept for hydrophobic dentin bonding

F. R. Tay, D. H. Pashley, R. R. Kapur, M. R.O. Carrilho, Y. B. Hur, L. V. Garrett, K. C.Y. Tay

Research output: Contribution to journal › Article › peer-review

139 Scopus citations

Abstract

The use of TEGDMA as a diluent comonomer in the formulation of hydrophobic adhesives for ethanol wet-bonding is a concern, due to its leaching potential, higher water sorption, and bio-incompatibility. This study tested the hypothesis that hydrophobic bonding to acid-etched dentin may be accomplished with the use of ethanol-solvated BisGMA only. Phosphoric-acid-etched, oxalate-occluded, deep coronal dentin bonded under 20 cm water pressure with experimental BisGMA adhesives by ethanol wet-bonding exhibited tensile strengths that were not significantly different from that achieved with OptiBond FL bonded according to the manufacturer-recommended protocol, with similar acid-/base-resistant hybrid layers, resin tags, and nanoleakage distribution. Ethanol replacement of water-saturated dentin produced wider interfibrillar spaces, more extensive shrinkage of the collagen fibrils, and narrower hybrid layers. Experimental BisGMA adhesives provide the proof of concept that relatively hydrophobic resins may be coupled to acid-etched dentin by increasing its hydrophobic characteristics via ethanol replacement. They should be further optimized before clinical application.

Original language	English (US)
Pages (from-to)	1034-1039
Number of pages	6
Journal	Journal of Dental Research
Volume	86
Issue number	11
DOIs	https://doi.org/10.1177/154405910708601103
State	Published - Nov 2007

Keywords

Acid-etched dentin
Bis-GMA
Dentin bonding
Ethanol wet bonding
Hydrophobic resin

ASJC Scopus subject areas

General Dentistry

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10.1177/154405910708601103

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title = "Bonding BisGMA to dentin - A proof of concept for hydrophobic dentin bonding",

abstract = "The use of TEGDMA as a diluent comonomer in the formulation of hydrophobic adhesives for ethanol wet-bonding is a concern, due to its leaching potential, higher water sorption, and bio-incompatibility. This study tested the hypothesis that hydrophobic bonding to acid-etched dentin may be accomplished with the use of ethanol-solvated BisGMA only. Phosphoric-acid-etched, oxalate-occluded, deep coronal dentin bonded under 20 cm water pressure with experimental BisGMA adhesives by ethanol wet-bonding exhibited tensile strengths that were not significantly different from that achieved with OptiBond FL bonded according to the manufacturer-recommended protocol, with similar acid-/base-resistant hybrid layers, resin tags, and nanoleakage distribution. Ethanol replacement of water-saturated dentin produced wider interfibrillar spaces, more extensive shrinkage of the collagen fibrils, and narrower hybrid layers. Experimental BisGMA adhesives provide the proof of concept that relatively hydrophobic resins may be coupled to acid-etched dentin by increasing its hydrophobic characteristics via ethanol replacement. They should be further optimized before clinical application.",

keywords = "Acid-etched dentin, Bis-GMA, Dentin bonding, Ethanol wet bonding, Hydrophobic resin",

author = "Tay, {F. R.} and Pashley, {D. H.} and Kapur, {R. R.} and Carrilho, {M. R.O.} and Hur, {Y. B.} and Garrett, {L. V.} and Tay, {K. C.Y.}",

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AU - Pashley, D. H.

AU - Kapur, R. R.

AU - Carrilho, M. R.O.

AU - Hur, Y. B.

AU - Garrett, L. V.

AU - Tay, K. C.Y.

PY - 2007/11

Y1 - 2007/11

N2 - The use of TEGDMA as a diluent comonomer in the formulation of hydrophobic adhesives for ethanol wet-bonding is a concern, due to its leaching potential, higher water sorption, and bio-incompatibility. This study tested the hypothesis that hydrophobic bonding to acid-etched dentin may be accomplished with the use of ethanol-solvated BisGMA only. Phosphoric-acid-etched, oxalate-occluded, deep coronal dentin bonded under 20 cm water pressure with experimental BisGMA adhesives by ethanol wet-bonding exhibited tensile strengths that were not significantly different from that achieved with OptiBond FL bonded according to the manufacturer-recommended protocol, with similar acid-/base-resistant hybrid layers, resin tags, and nanoleakage distribution. Ethanol replacement of water-saturated dentin produced wider interfibrillar spaces, more extensive shrinkage of the collagen fibrils, and narrower hybrid layers. Experimental BisGMA adhesives provide the proof of concept that relatively hydrophobic resins may be coupled to acid-etched dentin by increasing its hydrophobic characteristics via ethanol replacement. They should be further optimized before clinical application.

AB - The use of TEGDMA as a diluent comonomer in the formulation of hydrophobic adhesives for ethanol wet-bonding is a concern, due to its leaching potential, higher water sorption, and bio-incompatibility. This study tested the hypothesis that hydrophobic bonding to acid-etched dentin may be accomplished with the use of ethanol-solvated BisGMA only. Phosphoric-acid-etched, oxalate-occluded, deep coronal dentin bonded under 20 cm water pressure with experimental BisGMA adhesives by ethanol wet-bonding exhibited tensile strengths that were not significantly different from that achieved with OptiBond FL bonded according to the manufacturer-recommended protocol, with similar acid-/base-resistant hybrid layers, resin tags, and nanoleakage distribution. Ethanol replacement of water-saturated dentin produced wider interfibrillar spaces, more extensive shrinkage of the collagen fibrils, and narrower hybrid layers. Experimental BisGMA adhesives provide the proof of concept that relatively hydrophobic resins may be coupled to acid-etched dentin by increasing its hydrophobic characteristics via ethanol replacement. They should be further optimized before clinical application.

KW - Acid-etched dentin

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KW - Dentin bonding

KW - Ethanol wet bonding

KW - Hydrophobic resin

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Bonding BisGMA to dentin - A proof of concept for hydrophobic dentin bonding

Abstract

Keywords

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