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Published on: March 7, 2014
Marginal integrity after fatigue loading of ceramic inlay restorations luted with three different cements
1Department of Restorative Dentistry, Faculty of Dentistry, University of Tanta, Egypt. aliebraheem@hotmail.com
Purpose:
To evaluate the effect of fatigue loading on the quality of the cement around the margins of adhesive ceramic MOD inlays.
Materials And Methods:
Non-metal IPS Corum porcelain inlays were made and cemented either with the resin-based composite Variolink, the compomer Dyract-Cem or the glass-ionomer cement Ketac-Cem. For each system, half of the specimens were subjected to thermal and mechanical load cycling to simulate fatigue loading. All teeth were then sectioned and evaluated by SEM on topography and by optical microscopy for dye penetration.
Results:
Before loading, all systems showed good marginal integrity. After loading, inlays cemented with Variolink and Dyract-Cem showed no significant (P > 0.05) increase in marginal break down, however restorations cemented with Ketac-Cem, showed a significant (P < 0.05) deterioration at the margins.
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