Microleakage of CAD-CAM porcelain restorations.
OBJECTIVE
To evaluate the microleakage of CAD-CAM porcelain inlay restorations cemented with four different dual cure resin cements.


METHODS
Thirty human extracted caries-free molar teeth were prepared with a Class II MOD cavity design. One proximal box ended on enamel and the other on root surface dentin. The teeth were divided into six groups of five samples each. Two groups were restored with a direct placement composite resin to serve as a control. The other four groups were restored with CAD/CAM-generated ceramic inlays that were cemented with four dual cure resin cements. All specimens were thermocycled. Microleakage of the restorations was assessed by dye penetration.


RESULTS
Compared to direct placement resin composite which demonstrated an excellent enamel marginal seal, CAD/CAM-generated porcelain inlays produced excellent marginal seals at both the enamel and dentin interfaces.
LoPresti
J T
JT
Division of Restorative and Prosthodontic Sciences, College of Dentistry, New York University, NY 10010, USA.
David
S
S
Calamia
J R
JR
D017438:Bisphenol A-Glycidyl Methacrylate; D002484:Cementation / Q000379:methods*; D016009:Chi-Square Distribution; D003188:Composite Resins; D017076:Computer-Aided Design; D003738:Dental Cements; D003763:Dental Leakage / Q000517:prevention & control*; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D017220:Dentin-Bonding Agents; D005069:Evaluation Studies as Topic; D006801:Humans; D007284:Inlays; D011140:Polyurethanes; D019279:Resin Cements
D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; C103503:EnForce-Sure Cure; C084549:Infinity resin; D011140:Polyurethanes; D019279:Resin Cements; C096477:Vitabloc MK1; D003776:Dental Porcelain; C069103:Dual Cement; C103502:Variolink; D017438:Bisphenol A-Glycidyl Methacrylate; C046503:formula F 70