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Volume 8 , Issue 5
September/October 1993
Pages 549-554

Comparison Between Implant-Supported Prostheses and Teeth Regarding Passive Threshold Level

Reinhilde Jacobs, DDS/Daniel van Steenberghe, MD, PhD

PMID: 8112795

A passive threshold determination was carried out on 31 patients subdivided into four test groups according to different prosthesis types supported by osseointegrated implants. They were compared to a control group of 10 patients with nonrestored natural test teeth. Forces were generated by a solenoid-driven stimulating device, which was placed in contact with the implant or tooth prior to the actual force rise to avoid impact forces. The findings indicate that the threshold level of implants is 50 times higher than that of natural teeth when tapping is avoided, which might otherwise trigger distant receptors. Bone deformation triggering the periosteal mechanoreceptors is the most logical explanation for the sensation reported. (INT J ORAL MAXILLOFAC IMPLANTS 1993;8:549—554.)

Key words: oral implants, perception, periodontal receptors, tactile threshold

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