Bonding efficacy and interfacial microstructure between resin and dentine primed with glyceryl methacrylate

Journal of Dentistry
H ChigiraH Hisamitsu

Abstract

To evaluate the effect of two experimental primers based on glyceryl methacrylate (GM, 2,3-dihydroxypropyl methacrylate) and 2-hydroxyethyl methacrylate (2-HEMA) on the marginal adaptation of light-cured composite placed into cylindrical dentine cavities and to study the interfacial microstructure. The bonding efficacy of two experimental dentine primers combined with a dentine cleanser composed of either 0.5 mol l-1 EDTA neutralized to pH 7.4 by sodium hydroxide or 10% citric acid containing 3% ferric chloride (10-3 solution), and a commercial dentine bonding agent containing phosphate ester, were examined by measuring the wall-to-wall polymerization contraction gap of a commercial light-activated resin composite placed into cylindrical dentine cavities. The adhesive interface between the dentine and the dentine adhesive was observed using a transmission electron microscope (TEM). The formation of a contraction gap was completely prevented by priming with GM, regardless of the dentine cleanser used. However, in groups primed with 2-HEMA, gap formation was observed in three and four specimens out of 10 in the groups that were cleaned with the EDTA and 10-3 solution, respectively. In samples primed with GM, a high-density layer ...Continue Reading

References

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Citations

Oct 17, 2002·Journal of Dentistry·Mizuho KusunokiSadao Wakumoto
Feb 2, 2011·Dental Materials Journal·Mizuho KusunokiHisashi Hisamitsu
Nov 2, 2006·Dental Materials Journal·Mizuho KusunokiHisashi Hisamitsu
Sep 25, 2007·Dental Materials Journal·Mizuho KusunokiHisashi Hisamitsu
Jun 7, 2002·The Journal of Clinical Pediatric Dentistry·T AsakawaR Sasa

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