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

• Published in: Dental Materials Journal Vol. 42; no. 4; pp. 478 - 484
• Main Authors: HIRABA, Haruto, KOIZUMI, Hiroyasu, NOGAWA, Hiroshi, TAKEHANA, Kosuke, YONEYAMA, Takayuki, MATSUMURA, Hideo
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society for Dental Materials and Devices 25.07.2023; Japan Science and Technology Agency
• Subjects: Bonding strength; Durability; Enamel; Etching; Methacryloyloxydecyl dihydrogen phosphate; Methacryloyloxyethyl trimellitate anhydride; Methyl methacrylate; Phosphating (coating); Polymethyl methacrylate; Resins; Statistical analysis; Thermal cycling; Tri-n-butylborane; Tri-n-butylborane; Methacryloyloxydecyl dihydrogen phosphate; Methyl methacrylate; Enamel
• ISSN: 0287-4547; 1881-1361
• DOI: 10.4012/dmj.2022-273

This study investigated the effect of 10-methacryloyloxydecyl dihydrogen phosphate (MDP) in methyl methacrylate (MMA) monomer on the adhesion of tri-n-butylborane (TBB)-initiated resins (MDP/MMA-TBB resins) to human enamel. Enamel surface conditions were either polished only or phosphatized surfaces. The 1.0, 1.7, and 2.0 mol% MDP/MMA-TBB resins, 4-methacryloxyethyl trimellitate anhydride (4-META)/MMA-TBB resin and MMA-TBB resin were prepared as luting materials. The shear bond strength was determined before and after thermocycles, and the results were compared using non-parametric statistical analyses (each, n=15). The MDP/MMA-TBB resins showed significantly better bond durability to enamel than other resins with or without etching. The 1.7 and 2.0 mol% MDP/MMA-TBB resins were suggested to be the optimum MDP concentrations from pre- and post-thermocycling results for the non-etched specimens. The TBB initiator resin including MDP was shown to be effective in bonding to human enamel, and this effect was enhanced in combination with phosphate treatment.