By a News Reporter-Staff News Editor at Robotics & Machine Learning -- Researchers detail new data in Dentistry. According to news originating from Genoa, Italy, by VerticalNews correspondents, research stated, "To measure the vertical occlusal forces transmitted through crowns made of different restorative materials onto simulated pen-implant bone. The study was conducted using a masticatory robot that is able to reproduce the mandibular movements and forces exerted during mastication."
Our news journalists obtained a quote from the research from the University of Genoa, "During robot mastication, the forces transmitted onto the simulated pen-implant bone were recorded using nine different restorative materials for the simulated single crown: zirconia, two glass-ceramics, a gold alloy, three composite resins, and two acrylic resins. Three identical sample crowns for each material were used. Each crown was placed under 100 masticatory cycles, occluding with the flat upper surface of the robot to evaluate the vertical forces transmitted. Two-way analysis of variance was used. Alpha was set at .05. The statistical evaluation of the force peaks recorded on the vertical z-axis showed mean values of 641.8 N for zirconia; 484.5 N and 344.5 N, respectively, for the two glass-ceramics; 344.8 N for gold alloy; 293.6 N, 236 N, and 187.4 N, respectively, for the three composite resins; and 39.3 N and 28.3 N, respectively, for the two acrylic resins. Significant differences were found between materials (P < .0001), except for the comparison between gold alloy and one of the glass-ceramics."
According to the news editors, the research concluded: "Composite and above all acrylic resin crowns were more able to absorb shock from occlusal forces than crowns made of zirconia, ceramic material, or gold alloy."
For more information on this research see: Shock Absorption Capacity of Restorative Materials for Dental Implant Prostheses: An In Vitro Study. International Journal of Prosthodontics, 2013;26(6):549-556. International Journal of Prosthodontics can be contacted at: Quintessence Publishing Co Inc, 4350 Chandler Drive, Hanover Park, IL 60133, USA.
The news correspondents report that additional information may be obtained from M. Menini, University of Genoa, Dept. of Hlth Sci, Sect Biostat, Genoa, Italy. Additional authors for this research include E. Conserva, T. Tealdo, M. Bevilacqua, F. Pera, A. Signori and P. Pera.
Keywords for this news article include: Genoa, Italy, Europe, Robotics, Dentistry, Gold Alloys, Gold Compounds, Machine Learning, Emerging Technologies
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