Testing of Dental Implants

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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. The test fixture meets the requirements specified in ISO 14801 and applies an oscillating pressure threshold load. This test 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.

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Fatigue test on dental implants

Fatigue-testing dental implants as per ISO 14801

The tests can also be performed under physiological (in-vivo) conditions by using the ZwickRoell 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), ZwickRoell offers the technical-scientific program SAFD (Statistical Analysis of Fatigue Data).

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 15 Hz or 2 Hz
  • Signal shape: Sine

Compression-Torsion-Fatigue Test on Dental Products Under Physiological Environmental Conditions (Chewing Simulator)

For tests on teeth, dentures, and filling materials, ZwickRoell offers a test stand based on the HCT 10 servo-hydraulic testing machine, which enables a dynamic load with axial force up to 10 kN and a torque of up to 100 Nm. 
Chewing simulation1

In this test, up to five specimens are placed in a water bath at the same time. They are loaded by a test piece with a test frequency up to 25 Hz axially, torsionally, or with a transverse movement. The forces are recorded by a load cell between the actuator piston and test die, or by 3-component load cells below the water bath.

  • According to ISO 14801-07
  • Controlled axial preload (50 N)
  • Dynamic torsion (angle control ± 3°)
  • Temperature conditioning 37°C
  • Test frequency up to 25 Hz
  • 6 specimens simultaneously
  • Saline solution, temperature conditioning
  • Visual evaluation: the quality of the surface is evaluated after the test
Chewing simulation2
Chewing simulation3

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