Akademik Veri Yönetim Sistemi
JOURNAL OF ORAL REHABILITATION, cilt.33, ss.387-392, 2006 (SCI İndekslerine Giren Dergi)
The purpose of this study was to measure and compare the colour stability of three porcelain repair materials (Charizma, Clearfil and Silux Plus) with an all-ceramic material following accelerated ageing. Three composites and one ceramic control were subjected to accelerated ageing for a period of 300 h. Initial specimen colour parameters were determined in the Commission international de I'Eclairage Lab (CIELAB) colour order system with a colorimeter. Colour changes were calculated before (AE) and after 300 h of accelerated ageing (Delta E*). Colour difference data were subjected to one-way analysis of variance (ANOVA) followed by Duncan's test to examine the interaction between material and time interval of ageing. There were no significant difference between Delta L values of Porcelain-Charizma and Porcelain-Silux Plus. All mean Delta L* values were negative after 300 h ageing. Porcelain-Silux Plus demonstrated the highest Delta L* of the investigated groups. There were significant differences between baseline 300-h aged specimens with respect to Delta a*, Delta a for either of the investigated materials. For Silux Plus, Delta a and Delta a* values were significantly higher than the others. Significant differences were observed between baseline and 300-h values for Delta b and Delta b*. Delta b and Delta b* values were significantly higher for Silux Plus. There were significant differences between baseline and 300-h values of colour difference, Delta E, Delta E*. Highest Delta E* value was obtained using the microfilled composite, Silux Plus. Lowest value of Delta E was recorded with the hybrid composite, Charizma.