Effect of loading frequency on cyclic fatigue lifetime of a standard-diameter implant with an internal abutment connection

Dental Materials : Official Publication of the Academy of Dental Materials
Y Duan, Jason A Griggs

Abstract

To investigate the effect of loading frequency on the fatigue lifetime of one standard-diameter titanium dental implant system. Thirty-six titanium dental implant specimens (Bone Level RC, Straumann) were assembled following manufacturer's instructions and torqued into cylindrical holder blocks following the apparatus specified by the ISO 14801 test standard. Stainless steel loading hemispheres were bonded on the abutments with a moment arm of 11mm. The holder blocks had layers of differing stiffness to simulate human jaw bone. Constant-stress fatigue lifetime testing was conducted at two frequencies (2Hz and 15Hz) with a stress ratio of 0.1 until fracture in deionized water at 37°C on servo-hydraulic load frames (MTS). The fractured specimens were retrieved and examined using fractographic technique to determine the failure mode. The lifetime data were fit to a general log-linear regression model. The coefficient for the load amplitude term of the regression model indicated that increasing load amplitude had a statistically significant negative effect on the fatigue lifetime. The coefficients for the cyclic frequency term and the load-frequency interaction term were not significantly different from zero, which indicated that i...Continue Reading

References

Jun 25, 2002·Implant Dentistry·Nirit Tagger GreenMicha Peled
Aug 1, 2009·Dental Materials : Official Publication of the Academy of Dental Materials·Matthias Karl, J Robert Kelly
Aug 4, 2009·Dental Materials : Official Publication of the Academy of Dental Materials·Cornell K LeeJ Robert Kelly
Jul 20, 2010·Clinical Oral Implants Research·Pierre SimonisHenri Tenenbaum
Jan 3, 2013·Clinical Oral Implants Research·Keren Shemtov-YonaEli E Machtei
Apr 5, 2013·Clinical Implant Dentistry and Related Research·Julia-Gabriela WittnebenUrs Brägger
Mar 25, 2014·The International Journal of Oral & Maxillofacial Implants·Bjarni E PjeturssonIrena Sailer
Mar 29, 2014·Clinical Oral Implants Research·Sven RinkeDirk Ziebolz
Sep 10, 2017·Dental Clinics of North America·Jason A Griggs
Jun 21, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Yuanyuan DuanJason A Griggs

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