Aim of the study was to evaluate the color stability of lithium disilicate ceramic veneers and zirconia reinforced lithium silicate ceramic veneers by using two different types of resin cements including light cured and dual cured cements.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
TRIPLE
Enrollment
44
Veneers will be fabricated using Lithium disilicate (Livento® Press) ceramic and luted using Bifix QM dual cured cement
Veneers will be fabricated using Lithium disilicate (Livento® Press) ceramic and luted using Bisco choice 2 light cured cement
Veneers will be fabricated using Zirconia-reinforced lithium silicate (Celtra® Press) ceramic and luted using Bifix QM dual cured cement
Faculty of Dentistry, Alexandria University
Alexandria, Egypt
Color stability assessment
VITA Easyshade® Advance spectrophotometer will be used to measure the shade on the CIELab system, which defines color on 3 axes: L\*, lightness, ranging from 0 (black) to 100 (white); and a\* and b\*, chromatic characteristics ranging from red (+a\*) to green (-a\*) and yellow (+b\*) to blue (-b\*) The color will be measured 3 times, and the mean L\*, a\*, and b\* values will be calculated and used to measure color change (delta E)
Time frame: up to 12 months
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Veneers will be fabricated using Zirconia-reinforced lithium silicate (Celtra® Press) ceramic and luted Bisco choice 2 light cured cement