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International Journal of Periodontics & Restorative Dentistry



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Int J Periodontics Restorative Dent 37 (2017), No. 3     21. Apr. 2017
Int J Periodontics Restorative Dent 37 (2017), No. 3  (21.04.2017)

Online Article, Page 180-188, doi:10.11607/prd.3126, PubMed:28402355

Online Article: Digitally Milled Metal Framework for Fixed Complete Denture with Metal Occlusal Surfaces: A Design Concept
AlBader, Bader / AlHelal, Abdulaziz / Proussaefs, Periklis / Garbacea, Antonela / Kattadiyil, Mathew T. / Lozada, Jaime
Implant-supported fixed complete dentures, often referred to as hybrid prostheses, have been associated with high implant survival rates but also with a high incidence of mechanical prosthetic complications. The most frequent of these complications have been fracture and wear of the veneering material. The proposed design concept incorporates the occlusal surfaces of the posterior teeth as part of a digital milled metal framework by designing the posterior first molars in full contour as part of the framework. The framework can be designed, scanned, and milled from a titanium blank using a milling machine. Acrylic resin teeth can then be placed on the framework by conventional protocol. The metal occlusal surfaces of the titanium-countered molars will be at centric occlusion. It is hypothesized that metal occlusal surfaces in the posterior region may reduce occlusal wear in these types of prostheses. When the proposed design protocol is followed, the connection between the metal frame and the cantilever part of the prosthesis is reinforced, which may lead to fewer fractures of the metal framework.