PMID- 29723322 OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Prosthodont JT - The International Journal of Prosthodontics IS - 1942-4426 (Electronic) IS - 0893-2174 (Print) IP - 3 VI - 31 PST - ppublish DP - 2018 PG - 264-266 LA - en TI - In Vitro Fatigue and Fracture Testing of Implant-Supported Anterior Ceramic Crowns LID - 10.11607/ijp.5656 [doi] FAU - Preis, Verena AU - Preis V FAU - Behr, Michael AU - Behr M FAU - Rosentritt, Martin AU - Rosentritt M CN - AB - Purpose: To evaluate the fatigue and fracture resistance of anterior implant-supported and tooth-supported crowns made of different monolithic ceramics. Materials and Methods: Anterior crowns were fabricated of lithium disilicate or one of two zirconia ceramics and were tested as tooth-supported (reference) or as implant-supported crowns with chairside or labside (screw channel) procedures. After thermocycling and mechanical loading (TCML), crowns were loaded to fracture. Results: All crowns survived TCML. Implant-supported crowns (chairside and labside) showed higher fracture values than tooth-supported crowns. Fracture resistance was comparable or higher for zirconia than for lithium disilicate crowns. Conclusion: Implant-supported ceramic crowns may withstand clinical anterior loading forces. AID - 849993