title: Regular and switching platform: bone stress analysis with varying implant diameter.
abstract: The aim of this study was to evaluate stress distribution of the peri-implant bone by simulating the biomechanical influence of implants with different diameters of regular or platform switched connections by means of 3-dimensional finite element analysis. Five mathematical models of an implant-supported central incisor were created by varying the diameter (5.5 and 4.5 mm, internal hexagon) and abutment platform (regular and platform switched). For the cortical bone, the highest stress values (σmax and σvm) were observed in situation R1, followed by situations S1, R2, S3, and S2. For the trabecular bone, the highest stress values (σmax) were observed in situation S3, followed by situations R1, S1, R2, and S2. The influence of platform switching was more evident for cortical bone than for trabecular bone and was mainly seen in large platform diameter reduction.
authors.forename: Luis Carlos Merson
authors.initials: LC
authors.lastname: Vargas
authors.forename: Erika Oliveira
authors.initials: EO
authors.lastname: de Almeida
authors.forename: Eduardo Passos
authors.initials: EP
authors.lastname: Rocha
authors.forename: Sidney
authors.initials: S
authors.lastname: Kina
authors.forename: Rodolfo Bruniera
authors.initials: RB
authors.lastname: Anchieta
authors.forename: Amílcar Chagas Freitas
authors.initials: AC
authors.lastname: Júnior
authors.forename: Fabiana Mantovani Gomes
authors.initials: FM
authors.lastname: França
mesh_terms: D001696:Biomechanical Phenomena; D003198:Computer Simulation; D003442:Crowns; D000044:Dental Abutments; D059605:Dental Implant-Abutment Design / Q000379:methods*; D015921:Dental Implants; D003776:Dental Porcelain / Q000737:chemistry; D017267:Dental Prosthesis Design; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D007180:Incisor; D008437:Maxilla / Q000502:physiology*; D008954:Models, Biological; D019279:Resin Cements / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D015921:Dental Implants; C508050:IPS e.max Press; D019279:Resin Cements; D003776:Dental Porcelain; C103502:Variolink