PURPOSE: This study was conducted to measure, in vitro, the chewing load forces transmitted through crowns made of different prosthetic restorative materials onto dental implants. MATERIALS AND METHODS: A masticatory robot capable of reproducing the mandibular movements and the forces exerted during chewing was used. The forces transmitted to the simulated peri-implant bone during the robot mastication were analyzed using four different occlusal materials: three resin composites and one glass ceramic crown. RESULTS: The ceramic crowns transmitted significantly greater forces (up to +63.06%, P < .0001) than the composite crowns tested. CONCLUSION: Composite crowns are better able to absorb shock from occlusal forces than crowns made of ceramic material.
The use of a masticatory robot to analyze the shock absorption capacity of different restorative materials for prosthetic implants: a preliminary report.
MENINI, MARIA;RAVERA, GIAMBATTISTA;PERA, PAOLO
2009-01-01
Abstract
PURPOSE: This study was conducted to measure, in vitro, the chewing load forces transmitted through crowns made of different prosthetic restorative materials onto dental implants. MATERIALS AND METHODS: A masticatory robot capable of reproducing the mandibular movements and the forces exerted during chewing was used. The forces transmitted to the simulated peri-implant bone during the robot mastication were analyzed using four different occlusal materials: three resin composites and one glass ceramic crown. RESULTS: The ceramic crowns transmitted significantly greater forces (up to +63.06%, P < .0001) than the composite crowns tested. CONCLUSION: Composite crowns are better able to absorb shock from occlusal forces than crowns made of ceramic material.
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