IADR Abstract Archives
Shade-Matching Quality and Esthetics of Composite in Anterior Restorations
Objectives: To evaluate if there is evidence of shade matching over a months’ time, with composite restorations before and after bleaching.
Methods: Ten extracted teeth with varying shades A1-D4 were collected. Samples were restored with Tetric EvoCeram® Bulk Fill (Ivoclar Vivadent) a Universal A shade composite. ClassV preparations (approximately 6mm x 2mm x 1.5mm) were acid etched with 40% Phosphoric Acid for 30 seconds, rinsed and air dried. Teeth were bonded with a fifth-generation bonding agent, filled and finished/polished with Super Snap and OneGloss(Shofu). The teeth were stored in distilled water at 37○C for 24hrs. Shades were evaluated by 2 calibrated clinicians using the VITA Classic shade guide and given an overall matching score between the restoration and tooth, using a scale of: Matches, Somewhat Matches, and Does not Match. All shade evaluations were recorded at a total of 5 locations, 4 sites around the restoration, and the 5th site directly over the restoration. Samples were completely immersed with Opalescence Boost(Ultradent) for 20 minutes, according to manufacturer’s instructions, two consecutive times, rinsed and placed in distilled water for 24 hours. L*a*b* and VITA shades were recorded post-operation(no bleaching), at 24 hours, 1 week, 2 weeks, 4 weeks post bleaching using the CrystalEye Spectrophotometer(Olympus). Each sample was evaluated under the Olympus stereomicroscope(SZX16). L*a*b* values of the 4 sites around the restoration were averaged and compared to the L*a*b* values of the restoration. Stata 15 was used and significant level was set at 0.01.
Results: Average color change after bleaching was 3 shades. Shade matching scores by the clinicians showed the composite matched 100%, for all teeth at all time intervals. There was no significant difference in the L*a*b* values between the restoration and tooth at each time interval(Table 1).
Conclusions: The shade of the filling matched that of the adjacent enamel pre- and post-bleaching.
Methods: Ten extracted teeth with varying shades A1-D4 were collected. Samples were restored with Tetric EvoCeram® Bulk Fill (Ivoclar Vivadent) a Universal A shade composite. ClassV preparations (approximately 6mm x 2mm x 1.5mm) were acid etched with 40% Phosphoric Acid for 30 seconds, rinsed and air dried. Teeth were bonded with a fifth-generation bonding agent, filled and finished/polished with Super Snap and OneGloss(Shofu). The teeth were stored in distilled water at 37○C for 24hrs. Shades were evaluated by 2 calibrated clinicians using the VITA Classic shade guide and given an overall matching score between the restoration and tooth, using a scale of: Matches, Somewhat Matches, and Does not Match. All shade evaluations were recorded at a total of 5 locations, 4 sites around the restoration, and the 5th site directly over the restoration. Samples were completely immersed with Opalescence Boost(Ultradent) for 20 minutes, according to manufacturer’s instructions, two consecutive times, rinsed and placed in distilled water for 24 hours. L*a*b* and VITA shades were recorded post-operation(no bleaching), at 24 hours, 1 week, 2 weeks, 4 weeks post bleaching using the CrystalEye Spectrophotometer(Olympus). Each sample was evaluated under the Olympus stereomicroscope(SZX16). L*a*b* values of the 4 sites around the restoration were averaged and compared to the L*a*b* values of the restoration. Stata 15 was used and significant level was set at 0.01.
Results: Average color change after bleaching was 3 shades. Shade matching scores by the clinicians showed the composite matched 100%, for all teeth at all time intervals. There was no significant difference in the L*a*b* values between the restoration and tooth at each time interval(Table 1).
Conclusions: The shade of the filling matched that of the adjacent enamel pre- and post-bleaching.
IMAGES
3311373_File000000.jpg
3311373_File000000.jpg