In vivo registration of force development with ceramic and acrylic resin occlusal materials on implant-supported prostheses.
OBJECTIVE
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.


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.


CONCLUSIONS
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.
Bassit
Roger
R
Oral and Maxillofacial Department, Lebanese University, Beirut. rogerbassit@hotmail.com
Lindström
Håkan
H
Rangert
Bo
B
D000328:Adult; D000368:Aged; D001732:Bite Force; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis / Q000379:methods*; D003801:Dental Veneers; D006801:Humans; D008409:Mastication; D016876:Metal Ceramic Alloys; D008768:Methylmethacrylates; D008875:Middle Aged; D015203:Reproducibility of Results
D016876:Metal Ceramic Alloys; D008768:Methylmethacrylates; C096474:Vintage Porcelain; D003776:Dental Porcelain; C091555:Meliodent