Resin bonding to Er: YAG laser-irradiated dentin: combined effects of pre-treatments with citric acid and glutaraldehyde.
The purpose of this study was to evaluate the combined effects of citric acid and glutaraldehyde (GA) on the resin bonding to Er: YAG laser-irradiated dentin. Bovine dentin was prepared with 180- to 600-grit SiC paper and then uniformly irradiated with an Er: YAG laser (laser-irradiated group) or immersed in water at 60 degrees C for 15 min (heated group). The samples were then acid-conditioned with 10% citric acid (10-0) or 10% citric acid/3% ferric chloride (10-3) for 15 s and treated with GA for 10 min before bonding to an acrylic rod with 4-META/MMA-TBB resin. These samples were trimmed to prepare miniaturized dumbbell-shaped specimens. After storage in water at 37C for 1 d, the tensile bond strength was measured, and the fractured surface was evaluated using a scanning electron microscope (SEM). In the laser-irradiated and heated groups, the 10-3+GA-treated specimen had higher bond strength than that of 10-0+GA. On the other hand, the tensile bond strength of 10-3 +GA in the non-irradiated group was lower that that of 10-0+GA. In conclusion, the combination of 10-3 and GA for bonding with 4-META/MMA-TBB resin was the most effective for Er: YAG laser-irradiated dentin and heated dentin, but it was not effective for the non-irradiated dentin.
Kameyama
A
A
The Third Department of Conservative Dentistry, Tokyo Dental College, Chiba, Japan,. kameyama@tdc.ac.jp
Oda
Y
Y
Hirai
Y
Y
Kawada
E
E
Takizawa
M
M
D000134:Acid Etching, Dental; D000180:Acrylic Resins / Q000737:chemistry; D000538:Aluminum Silicates; D000818:Animals; D001896:Boron Compounds / Q000737:chemistry; D002417:Cattle; D002614:Chelating Agents / Q000494:pharmacology*; D002712:Chlorides; D019343:Citric Acid / Q000494:pharmacology*; D003432:Cross-Linking Reagents / Q000494:pharmacology*; D001840:Dental Bonding; D003804:Dentin / Q000187:drug effects / Q000528:radiation effects* / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D004871:Erbium; D005290:Ferric Compounds / Q000494:pharmacology; D005976:Glutaral / Q000494:pharmacology*; D007101:Immersion; D007834:Lasers; D020366:Methylmethacrylate / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D019904:Polymethyl Methacrylate / Q000737:chemistry; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D013718:Tensile Strength; D014867:Water / Q000737:chemistry; D015019:Yttrium
D000180:Acrylic Resins; D000538:Aluminum Silicates; D001896:Boron Compounds; D002614:Chelating Agents; D002712:Chlorides; D003432:Cross-Linking Reagents; D017220:Dentin-Bonding Agents; D005290:Ferric Compounds; D019279:Resin Cements; D014867:Water; C009523:tri-n-butylborane; D020366:Methylmethacrylate; D019343:Citric Acid; D015019:Yttrium; D004871:Erbium; C031172:4-META resin; D019904:Polymethyl Methacrylate; D005976:Glutaral; C024555:ferric chloride