Effect of Toothbrushing on Surface Characterization of Ceramic-Polymer Materials
Abstract
New milleable ceramic-polymer materials have been introduced with claims of convenient placement of visible-light-cured extrinsic stains. Purpose: 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 examined. Each block material was characterized and glazed per manufacturers instructions. Specimens were then brushed in a toothpaste slurry with artificial saliva using a toothbrush machine with a soft toothbrush. CIE - L*a*b*values were recorded with a spectrophotometer at baseline and at 3, 6, 9, and 12-year equivalent simulated years of brushing (7,300 strokes/yr). A mean change in color (delta E*) and standard deviation were determined for each group and brushing interval. Results: Cerasmart and Enamic had a significantly greater delta E* compared to IPS e.max CAD at each time interval. The delta E* was not significantly different between Cerasmart and Enamic except at 3 years. Cerasmart and Enamic had a significant increase in delta E* between each time interval, whereas for IPS e.max CAD, the increase in delta E* was only significant at 9 and 12 years of brushing. Conclusions: The extrinsic stains on the ceramic-polymer materials may be more susceptible to change from toothbrushing compared to the lithium-disilicate material. However, the change may only be clinically perceptible to the naked eye (delta E* > 2.3) after 9 years of brushing the ceramic-polymer materials.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 21, 2019
- Accession Number
- AD1128085
Entities
People
- Farzan L. Pouranfar
Organizations
- Uniformed Services University of the Health Sciences