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VOLUME 21 , ISSUE 9 ( September, 2020 ) > List of Articles

ORIGINAL RESEARCH

Effect of Toothbrushing on Surface Color of Ceramic-polymer Materials: An In Vitro Study

Farzan L Pouranfar, Ryan Sheridan, Cade Salmon, Kraig S Vandewalle

Keywords : Ceramic polymers, Extrinsic stains, Lithium disilicate, Surface color, Toothbrushing

Citation Information : Pouranfar FL, Sheridan R, Salmon C, Vandewalle KS. Effect of Toothbrushing on Surface Color of Ceramic-polymer Materials: An In Vitro Study. J Contemp Dent Pract 2020; 21 (9):1054-1058.

DOI: 10.5005/jp-journals-10024-2933

License: CC BY-NC 4.0

Published Online: 21-10-2020

Copyright Statement:  Copyright © 2020; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim and objective: The purpose of this study was to examine the effects of toothbrushing on the change in color of extrinsic characterization of ceramic-polymer materials. Materials and methods: Two ceramic-polymer materials (CeraSmart, GC; Enamic, VITA) and one lithium-disilicate material (IPS e.max CAD; Ivoclar Vivadent) were tested. Specimens of each material were prepared, characterized, and glazed per manufacturer\'s instructions. The treated surface of the blocks were then brushed in a toothpaste slurry with artificial saliva using a toothbrush machine with a soft toothbrush. Commission Internationale de L\'Eclairage (CIE) L*a*b* values were recorded with a spectrophotometer at baseline and at 3, 6, 9, and 12 simulated years of brushing (7,300 strokes/year). A mean change in color (ΔE*) and standard deviation was determined for each group and brushing interval. Data were analyzed with a two-way repeated measures ANOVA examining the effects of toothbrushing the ceramic materials on ΔE* over time (α = 0.05). Results: The difference in the ΔE* between CeraSmart and Enamic was significant at 3 years, while the differences between them were not significant at 6, 9, and 12 years of simulated brushing. The ΔE* of IPS e.max CAD was significantly lower than CeraSmart and Enamic at all time points (all p < 0.0001) except for the comparison with Enamic at 3 years. Conclusion: The extrinsic stains on the ceramic-polymer materials may be more susceptible to change from simulated toothbrushing compared to the lithium-disilicate material. Clinical significance: Toothbrushing may change the color of extrinsic characterization of ceramic-polymer materials. However, the change may remain clinically imperceptible to the naked eye (ΔE* > 1.0) for nearly 6 equivalent years of brushing.


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