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- Title
Colour stability of porcelain repair materials with accelerated ageing.
- Authors
SAYGILI, G.; ŞAHMALI, S.; DEMIREL, F.
- Abstract
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 (Δ E) and after 300 h of accelerated ageing (Δ 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 Δ L values of Porcelain-Charizma and Porcelain-Silux Plus. All mean Δ L* values were negative after 300 h ageing. Porcelain-Silux Plus demonstrated the highest Δ L* of the investigated groups. There were significant differences between baseline 300-h aged specimens with respect to Δ a*, Δ a for either of the investigated materials. For Silux Plus, Δ a and Δ a* values were significantly higher than the others. Significant differences were observed between baseline and 300-h values for Δ b and Δ b*. Δ b and Δ b* values were significantly higher for Silux Plus. There were significant differences between baseline and 300-h values of colour difference, Δ E, Δ E*. Highest Δ E* value was obtained using the microfilled composite, Silux Plus. Lowest value of Δ E was recorded with the hybrid composite, Charizma.
- Subjects
PORCELAIN; AGING; FIBER-reinforced ceramics; ANALYSIS of variance; CERAMICS; PORCELAIN repair
- Publication
Journal of Oral Rehabilitation, 2006, Vol 33, Issue 5, p387
- ISSN
0305-182X
- Publication type
Article
- DOI
10.1111/j.1365-2842.2005.01409.x