Fatigue Tests on Dental Implants to ISO 14801

Dental implants are used to replace teeth. The implant is embedded in the bone, acting as the root of the missing tooth. Zwick’s test fixtures meet the requirements specified in ISO 14801 and applies an oscillating pressure threshold load, which enables a comparison of dental implants of different constructions or sizes.

The ability to adjust the implant axis to the test axis from an angle of 0° to 50° and the rapid setting of 30° enables dental implant systems with and without angled connectors to be investigated with this test device. Embedding the dental implants in a pot allows for various thread designs to be compensated for and for the lever ratio of the implant to be set. The implant, which is embedded in a pot, is fixed in the test device with the aid of a clamping device.

The tests can also be performed under physiological (in-vivo) conditions by using the Zwick thermoregulation bath. For practical statistical evaluations of fatigue tests in the finite life range (high-cycle fatigue) and in the transitional range to fatigue strength (long life fatigue), Zwick offers the technical-scientific programme Statistical Analysis of Fatigue Data (SAFD).

The Amsler HC Compact dynamic testing machine features a compact design and extremely low-noise, providing an optimum solution for fatigue tests on dental implants in any laboratory when used in conjunction with the test fixture for dental implants (chewing simulator).

Method for compliance with ISO 14801 -07 – fatigue tests on dental implants

Determination of a Wöhler curve with a minimum of eleven dental implants:

  • Number of cycles: 5 million or 2 million
  • Test frequency up to 15Hz or 2Hz
  • Signal shape: Sine

Benefits of the Test Fixture for Dental Implants to ISO 14801

  • Complete fulfillment of standard “ISO 14801-07 Dynamic fatigue testing for endosseous dental implants” (fatigue tests on dental implants/chewing simulation), for simplest operation. The fatigue tests on dental implants can be implemented under physiological environmental conditions (for example, temperature-conditioned saline solution) with the use of the Zwick temperature conditioning vessel.
  • Head and foot flange assembly for simple and durable installation, taking into consideration the necessary degrees of freedom for the fatigue test on dental implants (chewing simulation).

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