الفهرس 
Title:Survival rate of e.max CAD laminate veneers cemented with immediate versus delayed cementation technique
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Abstract
Ceramic laminate veneers show a successful esthetic and functional long-term service for their perfect color match, marginal integrity and mechanical properties. The minimum-thickness, ceramic laminate veneers are a conservative and esthetic alternative to re -establish the form, shape and color of anterior teeth.Mechanical behavior and marginal integrity are the major factors that affectthe long-term prognosis of any restorations.This clinical study was done to evaluate the marginal integrity and post- operative sensitivity for e.max CAD veneers bonded with delayed (DDS) and immediate bonding (IDS) techniques. Twenty ceramic laminate veneers were fabricated for maxillary incisors. The patients were divided into two groups according to the bonding technique group 1 (control group) e.max CAD laminate veneers bonded with delayed dentin sealing technique. group 2 (intervention group) e.max CAD laminate veneers bonded with immediate dentin sealing technique. Standardized the same preparation with butt joint design and chamfer finish line located supra gingival were performed for all the teeth. The fabrication of the veneers was performed using CAD/CAM ( Vhf S1) machine, with software (Exocad).The veneers surfaces were treated and silanated according to the manufacture instruction of each ceramic and enamel surfaces were etched where total etch adhesive protocol was obeyed using BISCO. Survival rate in terms of (marginal adaptation and post-operative sensitivity) for both groups were evaluated according to united states public health services (USPHS) criteria