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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Biomechanical Behavior Evaluation of a Mandibular Full-Arch Implant-Supported Prosthesis on ZrO2 and TiO2 Monotype Dental Implants

Full text
Author(s):
Jefferson David Melo de Matos ; Nathália de Carvalho Ramos ; Daher Antonio Queiroz [3] ; Mário Alexandre Coelho Sinhoreti [4] ; Adriano Baldotto Barbosa [5] ; Marco Antonio Bottino [6] ; Alexandre Luiz Souto Borges [7] ; Guilherme da Rocha Scalzer Lopes [8]
Total Authors: 8
Document type: Journal article
Source: Int. J. Odontostomat.; v. 17, n. 2, p. 174-185, 2023-06-00.
Abstract

ABSTRACT: This in silico study aimed to evaluate the biomechanical behavior of a full-arch implant-supported prosthesis on titanium and zirconia monotype implants. A 3D mandible containing 1.0 mm thick cortical and cancellous bone was modeled. Four dental implants (3.3 x 10 mm) were inserted into the jaw model in each model. The implants consisted of Titanium (Ti-S group) and Zirconia Monotype/one-piece (Zr-S group). Fixed full-arch implant-supported prostheses were cemented onto the implant. The models were exported to the analysis software and divided into meshes composed of nodes and tetrahedral elements. All materials were considered isotropic, elastic, and homogeneous. Therefore, all contacts were considered bonded, the mandible model was fixed in all directions, applying a static structural axial load of 300 N on the bottom of the fossa of the left mola r teeth. Microstrain and von-Mises stress (MPa) were adopted as failure criteria. Comparable stress and strain values were shown in the peri-implant bone for both groups. However, the Ti-S group presented a lower stress value (1,155.8 MPa) than the Zr-S group (1,334.2 MPa). Regarding bone tissues, the Ti-S group presented 612 µε and the Zr-S group presented 254 µε. The highest strain peak was observed in bone tissues around the implant closer to the load for both groups. Evaluating monotype zirconia and titanium implants, it is suggested that the greater the rigidity of the implant, the greater the concentration of internal stre sses and the less dissipation to the surrounding tissues. Therefore, monotype ceramic implants composed of yttrium-stabilized tetragonal polycrystalline zirconia may be a viable alternative to titanium implants for full-arch prostheses. (AU)

FAPESP's process: 21/11499-2 - Biomechanical behavior and fatigue survival of two: piece titanium and zirconia implants supporting zirconia single crowns
Grantee:Jefferson David Melo de Matos
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 19/24903-6 - Comparative analysis between titanium implants and polycrystalline ceramics in survival on fatigue and biomechanical behavior
Grantee:Jefferson David Melo de Matos
Support Opportunities: Scholarships in Brazil - Doctorate