Evaluation of Adhesion Between Carbon Fiber Frameworks and Esthetic Veneering Materials.

ABSTRACT

PURPOSE: To assess bond strength and failure patterns of carbon fiber-reinforced composite (CFRC) and veneering materials. MATERIALS AND METHODS: A total of 20 samples were prepared 10 veneered with polymethylmethacrylate (group A) and 10 with composite resin (group B). Shear bond strength (SBS) was measured, and failed samples were microscopically observed. RESULTS: The mean ± standard deviation (SD) SBS of specimens in group A was slightly higher (7.39 ± 0.24 MPa) than specimens in group B (5.68 ± 0.29 MPa). Microscopic observation showed an adhesive fracture pattern at the CFRC-adhesive interface in both groups. CONCLUSION: Adhesion between CFRC and veneering material is reliable and predictable, although a specific protocol needs to be developed to improve adhesion.