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Retention Of Cad/Cam Crowns Luted With Resin Cements And Rmgi, Shruti Sushilkumar Sonavane

All ETDs from UAB

Objectives: To measure retention of lithium disilicate (IPS e.max CAD, Ivoclar Viva-dent) and zirconia reinforced lithium disilicate (CELTRATM DUO, Dentsply) copings luted using resin cements and resin-modified glass ionomer cement. Methods: 110 Extracted human, non-carious mandibular 2nd premolars (n=10) were embedded in PVC cylinders with acrylic resin and placed into a lathe to produce a uni-form crown preparation (22°-convergence & 3mm-height). Following the orientation groove placement (69L bur), preparations were scanned and milled using a CEREC 3D/Sirona machine to produce e.max and CELTRATM DUO crowns. Preparations were imaged with a digital microscope (Keyence/VHX-600-20X) and the surface area of each crown …