Tensile Bond Strength of a Highly Cross-Linked Denture Tooth to the Compression-Molded and Injection-Molded Denture Base Polymers

• Published in: The Journal of adhesion 2009-12, Vol.85 (12), p.953-970
• Main Authors: Dogan, Arife, Korkmaz, Turan, Dogan, Orhan Murat, Keskin, Selda, Demir, Hakan
• Format: Article
• Language: English
• Subjects: Application fields; Applied sciences; Biological and medical sciences; Cross-linked denture teeth; Denture base resins; Exact sciences and technology; Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics; Interpenetrating network (IPN); Maxillofacial surgery. Dental surgery. Orthodontics; Medical sciences; Polymer industry, paints, wood; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Technology of polymers; Tensile bond strength
• ISSN: 0021-8464; 1563-518X; 1545-5823
• DOI: 10.1080/00218460903310070

This study compared tensile bond strengths between conventional compression-molded heat (HC)-, auto (AP)-, and microwave-polymerized (MC) poly(methyl methacrylate)-based denture resins and a relatively new injection-molded, microwave-polymerized polyurethane based resin (MI) bonded to a highly cross-linked denture tooth. In the first part of the experiments, denture teeth were used as received. In the second part, they were treated with dichloromethane to see its effect on bonding of conventional denture bases (HCS and APS). Bond strength was tested in tension according to ADA specification No.15. The results showed that the HC group failed cohesively because of higher interface bonding (49.95 MPa) compared with those of the others (AP: 25.41 MPa; MC: 22.06 MPa; MI: 20.02 MPa). The application of dichloromethane improved bond strengths of HCS and APS groups (60.61 and 32.03 MPa, respectively). It was suggested that dichloromethane could be applied on the denture teeth ridge lap area prior to denture base processing to enhance adhesion between the tooth/resin.