Please use this identifier to cite or link to this item:
http://hdl.handle.net/1843/45447| Type: | Artigo de Periódico |
| Title: | Photoelastic and finite element stress analysis reliability for implant-supported system stress investigation |
| Authors: | Anna Gabriella Camacho Presotto Valentim Adelino Ricardo Barão Ricardo Armini Caldas Cláudia Lopes Brilhante Bhering Rafael Leonardo Xediek Consani Marcelo Ferraz Mesquita |
| Abstract: | Aim: To compare the reliability between photoelastic and finite element (FE) analyses by evaluating the effect of different marginal misfit levels on the stresses generated on two different implant-supported systems using conventional and short implants. Methods: Two photoelastic models were obtained: model C with two conventional implants (4.1×11 mm); and model S with a conventional and a short implant (5×6 mm). Three-unit CoCr frameworks were fabricated simulating a superior first pre-molar (P) to first molar (M) fixed dental prosthesis. Different levels of misfit (μm) were selected based on the misfit average of 10 frameworks obtained by the single-screw test protocol: low (<20), medium (>20 and <40) and high (>40). Stress levels and distribution were measured by photoelastic analysis. A similar situation of the in vitro assay was designed and simulated by the in silico analysis. Maximum and minimum principal strain were recorded numerically and color-coded for the models. Von Mises Stress was obtained for the metallic components. Results:Photoelasticity and FE analyses showed similar tendency where the increase of misfit generates higher stress levels despite of the implant design. The short implant showed lower von Mises stress values; however, it presented stresses around its full length for the in vitro and in silico analysis. Also, model S showed higher μstrain values for all simulated misfit levels. The type of implant did not affect the stresses around pillar P. Conclusions:Photoelasticity and FEA are reliable methodologies presenting similarity for the investigation of the biomechanical behavior of implant-supported rehabilitations. |
| Subject: | Biomechanical phenomena Dental Implants Optical phenomena Finite element analysis |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | FAO - DEPARTAMENTO DE ODONTOLOGIA RESTAURADORA |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | https://doi.org/10.20396/bjos.v17i0.8652941 |
| URI: | http://hdl.handle.net/1843/45447 |
| Issue Date: | 16-Jul-2018 |
| metadata.dc.url.externa: | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8652941/0 |
| metadata.dc.relation.ispartof: | Brazilian Journal of Oral Sciences |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Photoelastic and finite element stress analysis reliability for implant-supported system stress investigation.pdf | 1.07 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.