Adhesion of 4-META/MMA-TBB resin to heated dentin: effects of pre-treatments with FeCl3 and/or HEMA.
The purpose of this study was to compare the tensile bond strengths (TBSs) and failure mode of 4-META/MMA-TBB resin to 60 degrees C-heated and unheated bovine dentin, especially to investigate the influence of ferric chloride contained in citric acid pre-conditioning. In addition, the effect of HEMA priming for heated dentin was also evaluated. The TBSs to heated dentin were significantly lower than those to unheated dentin. Adhesive failures were observed in most specimens of the heated and HEMA-non primed group. HEMA application to heated dentin significantly increased the TBSs in each acid conditioning, which were also significantly higher than those of the unheated and ferric chloride-contained citric acid-conditioned group. It was clarified that heating dentin decreased the bond strength without HEMA priming even if the dentin surfaces were acid conditioned with 10-3, while HEMA priming after acid conditioning recovered the bond strength.
Kameyama
Atsushi
A
The Third Department of Conservative Dentistry, Tokyo Dental College 1-2-2 Masago, Mihama-ku, Chiba 261-8502, Japan.
Ihara
Soichiro
S
Amagai
Tetsuya
T
Miake
Yasuo
Y
Kawada
Eiji
E
Oda
Yutaka
Y
Yanagisawa
Takaaki
T
Hirai
Yoshito
Y
D000134:Acid Etching, Dental / Q000379:methods; D000180:Acrylic Resins / Q000737:chemistry; D000268:Adhesiveness; D000269:Adhesives / Q000737:chemistry; D000818:Animals; D001896:Boron Compounds / Q000737:chemistry*; D002417:Cattle; D002712:Chlorides; D001840:Dental Bonding; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis; D003804:Dentin / Q000737:chemistry* / Q000293:injuries / Q000502:physiology / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry; D006358:Hot Temperature; D066298:In Vitro Techniques; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry*; D011102:Polyhydroxyethyl Methacrylate / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D013718:Tensile Strength
C476988:4-methacryloxyethyltrimellitic acid-methylmethacrylate-tributylborane; D000180:Acrylic Resins; D000269:Adhesives; D001896:Boron Compounds; D002712:Chlorides; D017220:Dentin-Bonding Agents; D005290:Ferric Compounds; D008689:Methacrylates; D008768:Methylmethacrylates; D019279:Resin Cements; C476987:methylmethacrylate-tributylborane resin; C009523:tri-n-butylborane; D011102:Polyhydroxyethyl Methacrylate; C005044:hydroxyethyl methacrylate; C031172:4-META resin; C024555:ferric chloride