Color Stability and Surface Roughness of CAD/CAM Ceramill Composite and Cerasmart Endocrowns
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2018, Vol 17, Issue 9
Abstract
With the advent of adhesive and digital dentistry along with the introduction of new generations of ceramic materials, endocrowns have become more spread to restore endodontically treated teeth.1 Endocrowns are adhesively placed restorations with total cuspal coverage. 2 The clinical impact of bleaching agents over the color stability of ceramics and composite CAD/CAM materials is of major concern regarding the shade and esthetics of the restoration.3 Hydrogen Peroxide (HP) and Carbamide Peroxide (CP), the 2 most popular bleaching products, can change the physical properties of dental restorations such as color, surface roughness, hardness and ion leakage 3 . Our study aims to evaluate the effect of two bleaching protocols on the color stability and surface roughness of endocrowns made with two CAD/CAM materials; Ceramill Composite (CC) (Amman Girrbach, Germany) and Cerasmart (CS) (GC, America) after thermocycling and mechanical aging. A total of 32 freshly extracted human mandibular first molar posterior teeth were included in this in-vitro study. Hence forth the above study showed that both CS and CC showed clinically perceivable color change values after bleaching with CP20% or HP 40% higher than the clinically acceptable threshold (ΔE 3.7). However, bleaching resulted in insignificant changes in surface texture of both tested restorations
Authors and Affiliations
Cherif H. Mansour, Lamia S. Kheiralla, Lomaya A. Ghanem
Keywords
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- EP ID EP381966
- DOI 10.9790/0853-1709041324.
- Views 80
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