Finite element analysis of provisional structures of implant-supported complete prostheses.
The use of provisional resin implant-supported complete dentures is a fast and safe procedure to restore mastication and esthetics of patients soon after surgery and during the adaptation phase to the new denture. This study assessed stress distribution of provisional implant-supported fixed dentures and the all-on-4 concept using self-curing acrylic resin (Tempron) and bis-acrylic resin (Luxatemp) to simulate functional loads through the three-dimensional finite element method. Solidworks software was used to build three-dimensional models using acrylic resin (Tempron, model A) and bis-acrylic resin (Luxatemp, model B) for denture captions. Two loading patterns were applied on each model: (1) right unilateral axial loading of 150 N on the occlusal surfaces of posterior teeth and (2) oblique loading vector of 150 N at 45°. The results showed that higher stress was found on the bone crest below oblique load application with a maximum value of 187.57 MPa on model A and 167.45 MPa on model B. It was concluded that model B improved stress distribution on the denture compared with model A.
São Leopoldo Mandic School of Dentistry, Campinas, São Paulo, Brazil.
Bruno Albuquerque
BA
Carneiro
Rui Barbosa
RB
de Brito
Fabiana Mantovani Gomes
FM
França
D000180:Acrylic Resins / Q000737:chemistry; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D001732:Bite Force; D003198:Computer Simulation; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003825:Denture, Complete, Immediate; D020342:Finite Element Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods; D007575:Jaw, Edentulous / Q000503:physiopathology; D008334:Mandible / Q000503:physiopathology; D008689:Methacrylates / Q000737:chemistry; D008954:Models, Biological; D018583:Pliability; D013314:Stress, Mechanical; D014584:User-Computer Interface
D000180:Acrylic Resins; D015921:Dental Implants; D003764:Dental Materials; D008689:Methacrylates; C584985:Tempron; C098586:luxatemp; D017438:Bisphenol A-Glycidyl Methacrylate