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Type: Artigo de periódico
Title: Stress Analysis Of Different Configurations Of 3 Implants To Support A Fixed Prosthesis In An Edentulous Jaw
Author: da Silva-Neto J.P.
Pimentel M.J.
das Neves F.D.
Consani R.L.X.
dos Santos M.B.F.
Abstract: This study's aims was to evaluate the stress distribution in a mandibular implant-supported prosthesis and peri-implant bone considering implant quantity, diameter and position using linear 3-D finite element analysis. Models of an anterior jaw comprised 4 groups according to implant quantity, diameter, and position: control group C, 5 regular implants; R, 3 regular implants; W, 3 wide implants; and DTR, 3 regular implants with the distal ones tilted 30° distally. The cantilever was loaded with an axial load of 50 N. Data was evaluated using von Mises stress on implants and maximum principal stress and microstrain on the bone. The W group showed the lowest value of maximum principal stress in peri-implant bone of the loaded side (4.64 MPa) when compared to C (5.27 MPa), DTR (5.94 MPa), and R (11.12 MPa). Lower stress values in the loaded implants were observed in the experimental groups when compared to the C group. However, the unloaded implants presented opposite results. All the screws of the W group presented lower stress values when compared to the C group. However, the R and DTR groups presented an increase in stress values with the exception of the loaded screw. A reduction in the number of implants associated with wider implants reduced the stress in the bone and prosthetic components.
Rights: aberto
Identifier DOI: 10.1590/S1806-83242013005000028
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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