Islam Refaat Ali Ahmed And Manal Rafei Hassan ,

ABSTRACT

Objectives: The Aim Of The Study Is To Assess The Microleakage Of Laminate Veneer Constructed Of Two Ceramic Materials.

Materials and Methods: Forty Recently Extracted Caries Free Human Upper Central Incisors Were Collected, Cleaned Then Disinfected. The Teeth Were Divided Randomly Regarding The Material (Hybrid Ceramic And High Translucent Zirconia) Into 2 Groups N=20. The Teeth Were Prepared In A Feather Edge Design Then Their Laminate Veneers Were Designed And Milled By CAD CAM System. The Porcelain Laminate Veneers Were Cemented To The Prepared Teeth, Thermocycled, Stored In Fuchsine Dye For 24 H And Then Sectioned Labiopalatally. The Samples Were Investigated Incisally And Cervically For Dye Penetration By The Stereomicroscope. The Obtained Data Were Then Statistically Analyzed Using The 2 Way Anova And Independent Student T Test.

Results: Using The Independent Samples T Test, It Was Found That There Was Significant Microleakage Difference Between The Two Material Types. Vita Enamic Showed Low Microleakage Than Zirconia In Both Incisal And Cervical Margins. Conclusion: There Was Significant Relation Between The Microleakage And The Material Type. Vita Enamic Has Better Marginal Sealing Than Zirconia.