الفهرس 
DECLARATIONOnly 14 pages are availabe for public view
 |  | from | 135 |  |  |
| | | from | 135 | | |
Abstract
Aim: To evaluate clinically the color stability and patient satisfaction of polished versus glazed lithium disilicate glass ceramic restorations.
Methodology: Twenty full coverage crowns were fabricated from IPS e. max press in the posterior area. The patients were divided randomly into two equal groups according to the surface treatment applied to the crowns. group 1 (control group) 10 glazed crowns and group 2 (intervention group) 10 polished crowns. ΔE was measured using Vita easyshade and patient satisfaction was evaluated through Visual Analogue Scale (VAS) in the questionnaire, immediately after cementation and every two months for one year. Two-way ANOVA and t-test were used to analyze data.
Results: The results revealed that the polishing technique had a statistically significant higher mean ΔE than glazing but both were clinically acceptable. Polishing showed statistically significantly lower mean (L*) than glazing while C * and H* values showed no statistically significant difference. Regarding the follow up period results showed that time had no statistically significant effect on mean ΔE, L*, C* and H* values. There was also no statistically significant difference in patient satisfaction within each technique and at the different follow up times.
Conclusion: Although polishing showed higher color change than glazing, it was within the clinically acceptable limit.