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The International Journal of Oral & Maxillofacial Implants
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Int J Oral Maxillofac Implants 17 (2002), No. 1     15. Feb. 2002
Int J Oral Maxillofac Implants 17 (2002), No. 1  (15.02.2002)

Page 17-23


In Vivo Registration of Force Development with Ceramic and Acrylic Resin Occlusal Materials on Implant-Supported Prostheses
Bassit, Roger / Lindström, Håkan / Rangert, Bo
Purpose: It has been hypothesized that the shock generation on implant-supported prostheses during chewing should generate higher implant loads if the veneering material is porcelain rather than acrylic resin.
Materials and Methods: The present study uses strain-gauged abutments to measure the force transferred to the implant after a shock has been applied. This was measured in vitro and in vivo in 5 patients.
Results: The different occlusal materials did not lead to different forces generated to the implants of the patients.
Discussion: From a practical point of view, the choice of occlusal material has no bearing per se on force generation to the implants.
Conclusions: The present study demonstrated that there: (a) is a difference in resilience between acrylic resin and ceramic veneering materials, but (b) this difference is only measurable in in vitro where the force is generated by a shock only and the implant is rigidly anchored.

Keywords: biomechanics, dampening, resilience, strain-gauged abutment, veneering material