Marginal integrity after fatigue loading of ceramic inlay restorations luted with three different cements
Abdalla, A.I.; Davidson, C.L.
American Journal of Dentistry 13(2): 77-80
2000
ISSN/ISBN: 0894-8275 PMID: 11764831 Document Number: 517395
To evaluate the effect of fatigue loading on the quality of the cement around the margins of adhesive ceramic MOD inlays. 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. 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.