Bond strength of acrylic teeth to denture base resin after various surface conditioning methods before and after thermocycling

This study aimed to evaluate the durability of adhesion between acrylic teeth and denture base acrylic resin. The base surfaces of 24 acrylic teeth were flatted and submitted to 4 surface treatment methods: SM1 (control): No SM; SM2: application of a methyl methacrylate-based bonding agent (Vitacol); SM3: air abrasion with 30-μm silicone oxide plus silane; SM4: SM3 plus SM2. A heat-polymerized acrylic resin was applied to the teeth. Thereafter, bar specimens were produced for the microtensile test at dry and thermocyled conditions (60 days water storage followed by 12,000 cycles). The results showed that bond strength was significantly affected by the SM (P < .0001) (SM4 = SM2 > SM3 > SM1) and storage regimens (P < .0001) (dry > thermocycled). The methyl methacrylate-based adhesive showed the highest bond strength.

Keywords

acrylic acid resin, aluminum oxide, biomedical and dental materials, Lucitone, methacrylic acid methyl ester, silane derivative, silicon dioxide, unclassified drug, water, chemistry, clinical trial, comparative study, controlled clinical trial, controlled study, dental bonding, dental surgery, denture, human, materials testing, mechanical stress, randomized controlled trial, review, surface property, temperature, tensile strength, tooth brushing, tooth prosthesis, Acrylic Resins, Air Abrasion, Dental, Aluminum Oxide, Dental Bonding, Dental Materials, Dental Polishing, Denture Bases, Humans, Materials Testing, Methylmethacrylate, Silanes, Silicon Dioxide, Stress, Mechanical, Surface Properties, Temperature, Tensile Strength, Tooth, Artificial, Water