Hydrolysis-resistant and stress-buffering bifunctional polyurethane adhesive for durable dental composite restoration.

ABSTRACT: A new elastic polyurethane (PU) adhesive was reported in this study to improve the stability and durability of the dental adhesion interface. A polyurethane oligomer was synthesized by the solution polymerization method, and a diluent and solvent were added to prepare PU adhesives. The water sorption, water solubility, contact angle, thermal stability, degree of conversion and mechanical properties of the PU adhesives were evaluated. Experimental applications for tooth restoration (microtensile bond strength and microleakage) were also performed, and cytotoxicity test was carried out. The water sorption and solubility of the PU adhesives were significantly lower than those of three commercial adhesives. The microtensile bond strength of the PU adhesives was improved after thermocycling tes

SUBMITTER: Zhang J 

PROVIDER: S-EPMC7428285 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature