الفهرس 
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Abstract
This study was performed to evaluate The clinical performance of a template assisted direct composite laminate veneer versus the prefabricated composite laminate veneer system over one year follow up period. Six patients participated in the study (2males & 4 females aged 18- 45 years) where a total of 32 vital anterior teeth (10 central incisors & 12 lateral incisors and 10 canines) were restored with both COMPONEER composite, and IPS Empress Direct assisted by U-veneer template system (16 teeth each). Each patient received at least two types of restorations. The distribution of material, type and tooth location was randomized. Veneer Preparation designs were restricted to enamel. All materials were used according to the respective manufactures’ directions. All restorations were subjected to a periodic clinical follow up schedule at base line, 6 months and 12 months during which two investigators rated the restorations according to the modified United States Public Health Service (USPHS) criteria regarding marginal adaptation, marginal discoloration, postoperative hypersensitivity secondary caries, surface roughness, color matching and restoration fracture The examiners were not involved in the placement of the restorations and were unaware of the materials used. In this double- blind study, when disagreement aroused during evaluation they reevaluated the restorations together and determined the score by consensus. For confirmation of the clinical findings, the marginal seal of some representative restorations were verified by examining the marginal integrity by scanning electron microscope using an epoxy resin replica. The data obtained from the clinical evaluation at different follow up periods were collected, tabulated and statistically analyzed to determine the difference in performance of the tested techniques using Chi square test. Results revealed no statistically significant difference between the three tested groups at different follow up periods (P < 0.05). Spearman’s test revealed a statistical positive correlation between marginal adaptation versus both marginal discoloration and marginal discoloration versus both surface texture and color match.