A novel primer on dentin bonding of 4-META/MMA-TBB to collagen-depleted dentin.
The purpose of this study was to investigate the efficacy of an experimental dentin primer consisting of ascorbic acid (AA) and ferric chloride (Fe). Three exprimental primers - 10 wt%AA and 0.075 wt%Fe (i.e., 10AA-0.075Fe), 10AA-0Fe, and 0AA-0.075Fe - were prepared. Flattened dentin surfaces were first treated with phosphoric acid and NaClO, and subsequently primed using each experimental solution. Besides the experimental solutions, 10 wt% citric acid and 3 wt% ferric chroride (10CA-3Fe) was also used. A stainless steel rod was bonded to the dentin surface with Super-Bond C&B. 10CA-3Fe/Super-Bond C&B was then used as a control. Tensile bond strengths were evaluated after 24-hour immersion in water. 10AA-0.075Fe showed significantly high bond strength compared to 10AA-0Fe, 0AA-0.075Fe, 0AA-0Fe, and 10CA-3Fe. No significant differences were found between 10AA-0.075Fe and Super-Bond C&B system. The experimental primer consisting of 10 wt% ascorbic acid and 0.075 wt% ferric chloride improved the bonding between Super-Bond C&B and dentin conditioned with phosphoric acid and NaClO.
Soeno
Kohyoh
K
Division of Fixed Prosthodontics and Oral Rehabilitation, Department of Developmental and Reconstructive Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Japan. soeno@net.nagasaki-u.ac.jp
Suzuki
Shiro
S
Taira
Yohsuke
Y
Atsuta
Mitsuru
M
D000134:Acid Etching, Dental; D000180:Acrylic Resins / Q000737:chemistry; D000704:Analysis of Variance; D001205:Ascorbic Acid / Q000494:pharmacology; D001896:Boron Compounds / Q000737:chemistry; D002712:Chlorides; D001840:Dental Bonding / Q000379:methods*; D003799:Dental Stress Analysis; D003804:Dentin / Q000187:drug effects*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005290:Ferric Compounds / Q000494:pharmacology; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D008963:Molar; D010756:Phosphoric Acids / Q000494:pharmacology; D019279:Resin Cements / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013718:Tensile Strength
D000180:Acrylic Resins; D001896:Boron Compounds; D002712:Chlorides; D017220:Dentin-Bonding Agents; D005290:Ferric Compounds; D008689:Methacrylates; D008768:Methylmethacrylates; D010756:Phosphoric Acids; D019279:Resin Cements; C476987:methylmethacrylate-tributylborane resin; C031172:4-META resin; C049495:Super-bond; D012973:Sodium Hypochlorite; C030242:phosphoric acid; D001205:Ascorbic Acid; C024555:ferric chloride