الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
ceramic laminate veneers show provide successful esthetic and
functional long-term service for patients. Color match, mechanical properties
that can be stand for long time and marginal integrity. The minimum-thickness
anterior ceramic laminate veneers may be a conservative and esthetic alternative
to re - establish the form, shape, and color of anterior teeth .Mechanical
behavior and marginal integrity is one of the major factors that effect on longterm
prognosis of any restorations.
This clinical study was done to evaluate color stability of dual cure
adhesive resin cement without amine group in comparison with the light cure
adhesive resin cement.
Twenty two ceramic laminate veneers were fabricated for maxillary
anterior teeth.Teeth were divided into two groups according to the material that
used for fabrication.One group was fabricated from e.max cad and second group
fabricated from Vita enamic.All of teeth used in this study have the same
preparation design butt joint preparation with surrounding chamfer finish line
and finish line located above supra gingival by 1mm.
For standardizations all veneers fabricated using the same technique by
using Cad\Cam (Vhf S1) machine. And using the same design software
(Exocad).veneers surfaces were treated and silanated.The enamel surfaces were
etched and bonded.In case of dentine exposure during preparations we follow
immediate dentine sealing protocol.All veneers were lutted by total etch
adhesive cement(Bisco Choice 2) and follow the same procedure for two
material. The mean and standard deviation values were calculated for each group
in each test. Data were explored for normality using Kolmogorov-Smirnov and
Shapiro-Wilk tests, data showed non-parametric (not normal) distribution. The
data obtained by evaluating each assessment criteria were statistically analyzed
using the Chi-square test. The significance level was set at P ≤ 0.05. Statistical
analysis was performed with IBM® SPSS® Statistics Version 20 for Windows.