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Effect Of Increased Implant Crown Height On Fracture Strength Of Ips-E.Max Cad Hybrid Abutment Crown: An In-Vitro Study, Mohammad Mehdi Imani-Emadi
Effect Of Increased Implant Crown Height On Fracture Strength Of Ips-E.Max Cad Hybrid Abutment Crown: An In-Vitro Study, Mohammad Mehdi Imani-Emadi
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Introduction: The use of a secondary titanium insert has a beneficial influence on the stability of ceramic abutments and appears to be clinically useful for premolar and molar single-tooth replacements. Available titanium inserts in the market produced by Sirona, have a single height of 4.6mm with various platform diameters for different implant systems. The aim of this in-vitro study was to determine the fracture strength of IPS-e.max CAD hybrid abutment crowns with various crowns heights by simulating cyclic masticatory loads in vitro. Materials and Methods: Forty conical AstraTech EV dental implants, 4.2 mm in diameter and 9.0 mm in length …
Fracture Strength Of All-Ceramic Restorations After Fatigue Loading, Balasudha Baladhandayutham
Fracture Strength Of All-Ceramic Restorations After Fatigue Loading, Balasudha Baladhandayutham
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Fracture strength of monolithic and bilayered LAVA and e. max lower molar crowns after load cycling was measured and compared. The study included three groups (n = 8) from LAVA zirconia and three groups from e. max lithium disilicate to compare influences of different layers, thicknesses and manufacturing techniques. Prefabricated anatomically designed crowns were cemented to dies made from Z 100 composite resin using Rely X Luting Plus resin modified glass ionomer cement. Cemented crowns were stored at 37° C for 24 hours then cyclic loaded to test fatigue properties. The crowns were loaded to 200,000 cycles at 25N at …