Effect of dimension of luting space and luting composite on marginal adaptation of a class II ceramic inlay.
This study evaluated the in vitro marginal quality at the interproximal cervical margin of class II Cerec restorations. Marginal quality was evaluated separately by (1) SEM analysis before and after simultaneous thermocycling and mechanical loading for the integrity of the restoration surface and (2) dye penetration after thermocycling and mechanical loading to evaluate the strength of the bond within the depth of the cavity. The results reveal that marginal integrity is influenced by the width of the luting space and the luting composite. With a luting space of 100 microns, marginal quality with as little as 3% to 14% loss of adhesion can be obtained. Luting spaces greater than 100 microns can partially be compensated by the luting composite. For Cerec inlays, highly filled luting composites with a high viscosity are recommended.
Schmalz
G
G
Department of Operative Dentistry and Periodontology, University of Regensburg, Germany.
Federlin
M
M
Reich
E
E
D000268:Adhesiveness; D002484:Cementation; D002516:Ceramics / Q000737:chemistry*; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003736:Dental Cavity Lining; D003738:Dental Cements / Q000737:chemistry*; D003743:Dental Enamel / Q000648:ultrastructure; D003763:Dental Leakage / Q000175:diagnosis; D018772:Dental Marginal Adaptation; D003775:Dental Polishing; D003776:Dental Porcelain / Q000737:chemistry; D006801:Humans; D007284:Inlays / Q000145:classification; D008855:Microscopy, Electron, Scanning; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D014783:Viscosity
D004396:Coloring Agents; D003188:Composite Resins; D003738:Dental Cements; D003776:Dental Porcelain; C074543:Cerec