In-Vitro evaluation of fracture strength of zirconia and peek anterior FPD Framework
Keywords:
denture, partial, fixed, zirconium, PEEK, flexural strengthAbstract
Zirconia's fracture strength is well known, so that this work was aimed at evaluating PEEK's fracture strength and comparing it with Zirconia. The primary objective of this study was to compare the fracture strength in computer-based design, production with computer assistance, 3-unit Zirconia anterior and PEEK frameworks. Prefabricated 3-unit anterior FPD dental models were produced and scanned in relation to 21,22 and 23 using a 3-shape, Trios intraoral scanner, metallic die-milling employing base metal alloy. The same oral Intra scanner has been utilised for metallic die scanning (3 shape, Trios). Five CAD/CAM Zirconia 3-unit frameworks were created and metallic die cement was employed for concrete purposes, including five PEEK 3-unit (B group), for bonding resin cement was used. The strength of the fracture was tested by a universal test equipment. The force was applied to the specimen with a crosshead speed of 0.5 mm/min on the Pontic tooth 22 until the catastrophic collapse took place. The average strength fracture value for each FPD was recorded and analyzed statistically by unpaired student T-test.
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