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Volume 17 , Issue 1
January/February 2002
Pages 17–23

In Vivo Registration of Force Development with Ceramic and Acrylic Resin Occlusal Materials on Implant-Supported Prostheses

Roger Bassit, DDS, DUA, DUB/Håkan Lindström, MSc Eng Physics/Bo Rangert, PhD Mech eng

PMID: 11858570

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.(INT J ORAL MAXILLOFAC IMPLANTS 2002;17:17–23)

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