Priming effects of triethylene glycol and triethylene glycol monomethacrylate on dentin bonding.
The objective of this study was to evaluate the effects of triethylene glycol (TEG) and triethylene glycol monomethacrylate (TEGMA) solutions as dentin primers on dentin bonding. To this end, wall-to-wall polymerization contraction gap width of a resin composite in a cylindrical dentin cavity and shear bond strength to a flat dentin surface were measured. Dentin was pretreated with an experimental dentin bonding system - consisting of 0.5 M ethylenediaminetetraacetic acid conditioner, TEG or TEGMA primer, and Clearfil Photo Bond bonding agent - prior to resin composite filling. When the cavity was primed with an aqueous solution of 35 vol% TEG, 35 or 45 vol% TEGMA for a few seconds, contraction gap formation was prevented completely. Then, among these three gap-free groups, there were no significant differences in shear bond strength. It was thus shown that both TEG and TEGMA were highly effective dentin primers, completely preventing contraction gap formation even when they were applied for only a few seconds.
Kusunoki
Mizuho
M
Department of Clinical Cariology and Endodontology, Showa University, School of Dentistry, 2-1-1 Kitasenzoku, Ohta-Ward, Tokyo 145-8515, Japan. miz.k@gaea.ocn.ne.jp
Itoh
Kazuo
K
Utsumi
Yutaka
Y
Hisamitsu
Hisashi
H
D000180:Acrylic Resins / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D018772:Dental Marginal Adaptation; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry; D033081:Shear Strength
D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D011109:Polymethacrylic Acids; D011140:Polyurethanes; C020946:triethylene glycol dimethacrylate; C028914:triethylene glycol; D011092:Polyethylene Glycols