Objective: To compare the microleakage of class II cavities after using four restorative techniques with different values of C Factor (Cf). Methods: 72 cavities were done, and the first increment of the composite resin, at the cementum margin, was done as follow in each group:1)horizontal increment: Cf=1,4; 2)oblique increment gradient to the bucal wall: Cf=1,2; 3)oblique increment gradient to the axial wall: Cf=0,6; 4)oblique increment gradient to the cervical margin: Cf=2,0. Cavities were restored with Scotchbond Multi Purpose and Filteck P60 (3M). After thermocycling, a dye (fucsin at 2% ) penetration test was performed. Teeth were sectioned and analyzed (40x). Microleakage was scored on a 0-3 scale. Non-parametric Kruskal Wallis test showed no differences among the groups (p>0,05). Results: Average values are displayed in the table. Conclusions: A low C Factor, attained solely by the change of position and form of the first increment of resin composite, does not affect microleakage of class II cavities. (CICYT. MAT2001-2843-C02)
11:00 AM-12:15 PM, Saturday, 9 March 2002 San Diego Convention Center Exhibit Hall C
Back to the Dental Materials: II - Adhesion-Other Program
Back to the IADR/AADR/CADR 80th General Session (March 6-9, 2002)