Fracture strength of direct versus indirect laminates with and without fiber application at the cementation interface

摘要: Objectives. This study compared the fracture strength of direct and indirect resin composite laminate veneers evaluated effect a bidirectional E-glass woven fiber application at different locations cementation interface. Methods. Standard preparations on canines (N = 50, 10 per group) were made using depth cutting bur (0.7 mm depth) designed for veneer restorations. Forty laminates highly filled polymeric material (Estenia) (Quadrant Anterior Shine) prepared according to manufacturer's instructions. Bidirectional woven-fiber sheet (0.06mm) (Everstick) was applied The control group received no fibers. specimens stored in water 37 degrees C 1 month prior testing performed universal machine where load from incisal direction 137 (1 mm/min). Results. No significant differences found between five groups (P > 0.01) (one-way ANOVA). While showed mean 247 +/- 47N, revealed 239 104 N. use fibers interface did not increase significantly (286-313 N) 0.01). Failure analysis mainly cohesive restoration (20/50) adhesive failure with exposure (19/50) covering more than half Significance. Direct comparable strengths. veneers. (c) 2006 Academy Dental Materials. Published by Elsevier Ltd. All rights reserved.