Hanaa Saber Rabeae, Cherif Adel Mohsen And Shams Waaz Amgad,

ABSTRACT
Statement Of Problem: Occlusal Veneers Are Introduced As A Restoration Of Erosive Cases. Evaluation Of Different Machinable Ceramic Material To Be Used For Occlusal Veneer Should Be Occured.

Purpose: To Evaluate The Marginal Adaptation And Color Of Occlusal Veneer Restorations Using Computer Aided Design And Computer Aided Manufacturer (CAD/CAM) Ceramic Material (IPS E.max CAD) And Hybrid Ceramic Material (VITA Enamic).

Materials and Methods: Ten Cases With Posterior Occlusal Surface Wear Were Selected And Divided Into Two Groups According To A Ceramic Material Which Was Used (5 Cases Each):- The First Group : IPS E.max CAD Ceramic Occlusal Veneers Cemented By RelyX Ultimate Clicker Resin Cement. (5 Cases). The Second Group: VITA ENAMMIC Hybrid Ceramic Occlusal Veneers Cemented By RelyX Ultimate Clicker Resin Cement. (5 Cases). Marginal Adaptation Was Measured Using Cone Beem Computed Tomography (CBCT) And Color Shade Was Meagured Using VITA Easy Shade Device After Cementation, 3,6,9 Months.

Results: Between The Two Materials There Was A Significant Difference Between The Two Materials. There Was A Significant Difference By Time Between Follow Up Visits But Still In Clinical Accepted Range. In The Two Materials There Was No Significant Difference Between Measurement Of Time Of Cementation And After 3 Months, There Is A Significant Difference Between (0 Day, 3 Months) And (6 Months, 9 Months), No Significant Between 6months And 9months. Conclusion: VITA Enamic Has Higher Marginal Adaptation Than IPS E.max CAD. IPS E.max CAD Has Color Stability More Than VITA Enamic. According To Color; VITA Enamic Can Be Accepted As Esthetic Restorartion In Posterior Region. Clinical Implication: Within The Limitation Of This Study; IPS E.max CAD And VITA Enamic Are Clinically Accepted To Be Used As Occlusal Veneer.