Effect of a self-etching primer and phosphoric acid etching on the bond strength of 4-META/MMA-TBB resin to human enamel.
The purpose of this study was to evaluate the shear bond strength and durability of 4-META/MMA-TBB resin to human enamel. A self-etching primer that contained 4-META (Teeth Primer, TP) and 35-45% or 60-65% concentrations of phosphoric acid (K-Etchant Gel, KE, and Super Bond C&B Red Activator, RA) were used as the surface treatment agents. A methyl methacrylate (MMA)-based self-polymerizing resin (Super-Bond C&B) was used as a luting agent. The shear bond strength was determined both pre and post thermocycling. The results were statistically analyzed with a non-parametric procedure. The post-thermocycling shear bond strength of the TP group was significantly higher than that of other groups, and that of the KE group was significantly higher compared with the RA group. These results demonstrated that 4-META was effective. Furthermore, when the degree of tooth demineralization was compared, surface treatment with less demineralization using TP was the most effective treatment.
Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry.
Hiroshi
H
Nogawa
Hiroyasu
H
Koizumi
Osamu
O
Saiki
Haruto
H
Hiraba
Mitsuo
M
Nakamura
Hideo
H
Matsumura
D000134:Acid Etching, Dental / Q000379:methods; D001896:Boron Compounds / Q000494:pharmacology*; D003738:Dental Cements; D003743:Dental Enamel / Q000187:drug effects*; D003799:Dental Stress Analysis; D006801:Humans; D008422:Materials Testing; D008768:Methylmethacrylates / Q000494:pharmacology*; D010756:Phosphoric Acids / Q000494:pharmacology*; D019279:Resin Cements; D033081:Shear Strength / Q000187:drug effects; D013718:Tensile Strength
D001896:Boron Compounds; D003738:Dental Cements; D008768:Methylmethacrylates; D010756:Phosphoric Acids; D019279:Resin Cements; C476987:methylmethacrylate-tributylborane resin; C030242:phosphoric acid