An in vitro evaluation of the marginal integrity of a porcelain inlay system.
There is currently no consensus of opinion regarding form of the finish line for porcelain inlays. This study compared beveled and nonbeveled finishing lines. Twenty-four Class II MOD cavities of a standardised design were prepared in extracted premolar teeth. Twelve were finished using a half enamel occlusal bevel and 12 were not beveled. Porcelain inlays were fabricated and luted with a dual-polymerizing resin material. The completed restorations were stored in water, thermocycled, and analysed using a scanning electron microscope. The quality of the enamel/composite resin interface was found to be considerably better than that of the inlay/composite resin interface. The adaptation of composite resin to enamel was of equal quality for both beveled and nonbeveled preparations.
Qualtrough
A J
AJ
University Dental Hospital of Manchester.
Cramer
A
A
Wilson
N H
NH
Roulet
J F
JF
Noack
M
M
D003188:Composite Resins; D001840:Dental Bonding; D003737:Dental Cavity Preparation / Q000379:methods*; D003763:Dental Leakage / Q000517:prevention & control; D003776:Dental Porcelain; D005069:Evaluation Studies as Topic; D006358:Hot Temperature; D006801:Humans; D007284:Inlays; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties
D003188:Composite Resins; D003776:Dental Porcelain