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The International Journal of Oral & Maxillofacial Implants
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Int J Oral Maxillofac Implants 8 (1993), No. 5     1. Sep. 1993
Int J Oral Maxillofac Implants 8 (1993), No. 5  (01.09.1993)

Page 549-554


Comparison Between Implant-Supported Prostheses and Teeth Regarding Passive Threshold Level
Jacobs, Reinhilde / van Steenberghe, Daniel
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.

Keywords: oral implants, perception, periodontal receptors, tactile threshold