| Autor: |
Rea, Felipe Tarosso, Roque, Ana Carolina Cabral, Macedo, Ana Paula, Almeida, Rossana Pereira |
| Předmět: |
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| Zdroj: |
Journal of Esthetic & Restorative Dentistry; Sep/Oct2019, Vol. 31 Issue 5, p451-456, 6p, 1 Black and White Photograph, 2 Charts |
| Abstrakt: |
Objective: This study evaluated the influence of carbamide peroxide, 10% and 16%, on the surface roughness and gloss of a pressable ceramic. Materials and Methods: Carbamide peroxide (10% or 16%) was applied for 4 hours or 3 hours per day for 14 days, respectively, in pressable ceramic discs (14 mm × 2 mm). Specimens were stored in distilled water at 37°C. Surface roughness and gloss were determined before carbamide peroxide application (T0), 7 days (T7) and 14 days (T14) after the initial treatment. ANOVA was used with repeated measures and multiple comparisons with a Bonferroni adjustment (P < 0.005). Results: Significant increase in surface roughness was observed over time (P < 0.001), with T0 < T7 < T14. When the gloss was analyzed, significant differences were found (P < 0.001), control group showed a higher gloss than those of the 10% and 16% groups. Significant decrease in gloss was observed over time (P < 0.001), with T0 > T7 > T14. Conclusions: The surface roughness of pressable ceramics increased, while their gloss significantly decreased when 10% or 16% carbamide peroxide was applied. The specimens treated with 16% carbamide peroxide exhibited higher surface roughness and less gloss than the specimens treated with 10% carbamide peroxide. Clinical significance: This study found that carbamide peroxide gels commonly used in at‐home procedures influenced the surface roughness and gloss of a pressable ceramic that is often used for rehabilitation esthetics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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