Effect of sodium sulfite, carboxylic monomer, and phosphoric acid etching on bonding of tri-<i>n</i>-butylborane initiated resin to human enamel

Combined effect of two-liquid silane-phosphate primer and single-liquid sodium sulfite primer on bonding between self-polymerizing resins and feldspathic ceramics

“…The TP primer used is composed of 4-META, sodium sulfite, acetone and water [12][13][14] . The purpose of this study was to investigate the combined effect of PZ primer, 4-META, and sodium sulfite on the bonding interface between self-polymerizing resin and feldspathic ceramics.…”

“…The other primer used is a sodium sulfite primer (Teeth Primer; TP, Sun Medical), composed of a functional monomer, such as carboxylic anhydride (4-methacryloxyethyl trimellitate anhydride; 4-META), sodium sulfite as a reducing agent, water, and acetone [12][13][14] .…”

“…The effect of a sodium sulfite primer has been reported to improve the bond strength between 4-META/ MMA-TBB resin and enamel [12][13][14][15] or dentin 12) . These studies have speculated that a sodium sulfite primer affects the interfacial polymerization of the MMA-TBB resin.…”

Effects of methacryloyloxydecyl dihydrogen phosphate on bonding of tri-<i>n</i>-butylborane-initiated resin to human enamel

“…Ninety human molars extracted over six months were used in this study, which was approved by the Ethical Committee of Nihon University School of Dentistry (EP16D025). The processing conditions of the specimens using the teeth were based on previous studies of Nogawa et al 4,5) . The specimens were randomly divided into ten groups (n=30) based on the enamel treatment: five non-phosphoric acid etching groups, and five 35-45% phosphoric acid etching groups (KE).…”

“…Nogawa et al investigated effective enamel etching and reported that the effectiveness of etching with 35-45% phosphoric acid in improving the bonding of 4-META/MMA-TBB resins to enamel 4) . When the adhesive performance of MMA-TBB resin without 4-META to enamel was examined, the application of primer containing 4-META was also reported to be effective 5) . While the effectiveness of 4-META on enamel is a known fact, there have been reports of weak chemical bonding of 4-META 6,7) .…”