title: Stress distribution on external hexagon implant system using 3d finite element analysis.
abstract: The aim of this study was to compare and evaluate strain distribution on dental implant, abutment, screw and crown virtual models in the posterior region. The analysis was performed by means of a 3D virtual model developed by the PRO-ENGINEER System (PRO-ENGINEER, PTC, Needham, MA, USA ) with an external butt joint (3i Implant Innovations, Palm Beach, Florida), square headed Gold Tite abutment retainer screw (3i Implant Innovations, Palm Beach, Florida), STA abutment (3i Implant Innovations, Palm Beach, Florida), metal infrastructure of Ag-Pd alloy and feldspatic ceramic. The standard load was 382N at 15 degree angle to the implant axis, applied at 6 mm from the implant center at different observation points on the implant-screw set. The data showed that on the implant virtual model, the highest strain concentration was found at the interface between the implant platform and the abutment, and in the middle point of the 1st screw thread internal diameter on the load application side.
authors.affiliation: Department of Dental Materials, Faculty of Dentistry, Catholic Pontifical University of Rio Grande do Sul, Brazil. regesegundo@yahoo.com.br
authors.forename: Regênio M H
authors.initials: RM
authors.lastname: Segundo
authors.forename: Hugo M S
authors.initials: HM
authors.lastname: Oshima
authors.forename: Isaac N L
authors.initials: IN
authors.lastname: Silva
authors.forename: Luis H B
authors.initials: LH
authors.lastname: Júnior
authors.forename: Eduardo G
authors.initials: EG
authors.lastname: Mota
authors.forename: Luiz F B
authors.initials: LF
authors.lastname: Coelho
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D003198:Computer Simulation; D003442:Crowns; D000044:Dental Abutments; D003722:Dental Alloys / Q000737:chemistry; D015921:Dental Implants; D003776:Dental Porcelain / Q000737:chemistry; D017267:Dental Prosthesis Design; D020342:Finite Element Analysis; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008422:Materials Testing; D008954:Models, Biological; D010165:Palladium / Q000737:chemistry; D017680:Potassium Compounds / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D019231:Tooth Preparation, Prosthodontic; D014584:User-Computer Interface
chemical_list: D000538:Aluminum Silicates; D003722:Dental Alloys; D015921:Dental Implants; D006047:Gold Alloys; D017680:Potassium Compounds; D003776:Dental Porcelain; C016447:feldspar; D012834:Silver; D010165:Palladium