Abstract
Re-expansion of dried demineralized dentin is required to optimize resin adhesion. This study tested the hypothesis that bond strengths to dentin depend upon the ability of experimental HEMA(2-hydroxy-ethyl-methacrylate)/solvent primers to re-expand the matrix. Dentin surfaces were acid-etched with 37% phosphoric acid for 20 sec, air-dried for 30 sec, primed with either 35/65% (v/v) HEMA/water, HEMA/methanol, HEMA/ethanol, or HEMA/propanol for 60 sec, and bonded with 4-META-TBBO(4-methacryloyloxyethyl trimellitate anhydride-tri-n- butyl borane) adhesive. After storage in water for 1 day at 37°C, the samples were prepared for microtensile bond strength testing. We used transmission electron microscopy to measure the width of interfibrillar spaces in the hybrid layers. The HEMA/ethanol primer and the HEMA/propanol primer produced the highest and the lowest bond strengths, respectively (p < 0.05). Bond strengths were directly correlated with the width of the interfibrillar spaces (p < 0.05). Bond strengths are related to the ability of the primer to maintain the re-expansion of collapsed demineralized dentin matrix.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 597-601 |
| Number of pages | 5 |
| Journal | Journal of Dental Research |
| Volume | 82 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2003 |
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Keywords
- Dentin
- Microtensile bond strength
- Solvents
ASJC Scopus subject areas
- Dentistry(all)
Cite this
Effects of HEMA/solvent combinations on bond strength to dentin. / Carvalho, R. M.; Mendonça, J. S.; Santiago, S. L.; Silveira, R. R.; Garcia, F. C.P.; Tay, F. R.; Pashley, D. H.
In: Journal of Dental Research, Vol. 82, No. 8, 08.2003, p. 597-601.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of HEMA/solvent combinations on bond strength to dentin
AU - Carvalho, R. M.
AU - Mendonça, J. S.
AU - Santiago, S. L.
AU - Silveira, R. R.
AU - Garcia, F. C.P.
AU - Tay, F. R.
AU - Pashley, D. H.
PY - 2003/8
Y1 - 2003/8
N2 - Re-expansion of dried demineralized dentin is required to optimize resin adhesion. This study tested the hypothesis that bond strengths to dentin depend upon the ability of experimental HEMA(2-hydroxy-ethyl-methacrylate)/solvent primers to re-expand the matrix. Dentin surfaces were acid-etched with 37% phosphoric acid for 20 sec, air-dried for 30 sec, primed with either 35/65% (v/v) HEMA/water, HEMA/methanol, HEMA/ethanol, or HEMA/propanol for 60 sec, and bonded with 4-META-TBBO(4-methacryloyloxyethyl trimellitate anhydride-tri-n- butyl borane) adhesive. After storage in water for 1 day at 37°C, the samples were prepared for microtensile bond strength testing. We used transmission electron microscopy to measure the width of interfibrillar spaces in the hybrid layers. The HEMA/ethanol primer and the HEMA/propanol primer produced the highest and the lowest bond strengths, respectively (p < 0.05). Bond strengths were directly correlated with the width of the interfibrillar spaces (p < 0.05). Bond strengths are related to the ability of the primer to maintain the re-expansion of collapsed demineralized dentin matrix.
AB - Re-expansion of dried demineralized dentin is required to optimize resin adhesion. This study tested the hypothesis that bond strengths to dentin depend upon the ability of experimental HEMA(2-hydroxy-ethyl-methacrylate)/solvent primers to re-expand the matrix. Dentin surfaces were acid-etched with 37% phosphoric acid for 20 sec, air-dried for 30 sec, primed with either 35/65% (v/v) HEMA/water, HEMA/methanol, HEMA/ethanol, or HEMA/propanol for 60 sec, and bonded with 4-META-TBBO(4-methacryloyloxyethyl trimellitate anhydride-tri-n- butyl borane) adhesive. After storage in water for 1 day at 37°C, the samples were prepared for microtensile bond strength testing. We used transmission electron microscopy to measure the width of interfibrillar spaces in the hybrid layers. The HEMA/ethanol primer and the HEMA/propanol primer produced the highest and the lowest bond strengths, respectively (p < 0.05). Bond strengths were directly correlated with the width of the interfibrillar spaces (p < 0.05). Bond strengths are related to the ability of the primer to maintain the re-expansion of collapsed demineralized dentin matrix.
KW - Dentin
KW - Microtensile bond strength
KW - Solvents
UR - http://www.scopus.com/inward/record.url?scp=0042386620&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0042386620&partnerID=8YFLogxK
U2 - 10.1177/154405910308200805
DO - 10.1177/154405910308200805
M3 - Article
C2 - 12885842
AN - SCOPUS:0042386620
VL - 82
SP - 597
EP - 601
JO - Journal of Dental Research
JF - Journal of Dental Research
SN - 0022-0345
IS - 8
ER -