TITLE

Análise bidimensional de tensões em modelo de segundo pré-molar inferior, reconstruído com pinos de fibra de vidro e de carbono, por meio do método dos elementos finitos

AUTHOR(S)
do Nascimento, Gilmara Abrã Alves; Miranda, Milton Edson; Noritomi, Pedro Yoshito
PUB. DATE
July 2010
SOURCE
Revista Dental Press de Estética;jul-set2010, Vol. 7 Issue 3, p54
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The objective of this work was to compare, through the Finite Elements analysis, the distribution of internal stress in 2D models of a second lower pre-molar, without coronary remnant, under mesial view. The analysis was accomplished, comparing fiber glass and carbon fiber posts, both with parallel and echeloned format. It was applied a loading of 100 N, distributed in the coronal portion of the resin, in the longitudinal direction. The analysis of the data was accomplished with the software of the finite elements specific method and the results visualized in a scale of colors and values, according to von Mises' criterion. In the experimental conditions it was possible to conclude that: there was a uniform stress distribution in the interior of the casts in the root region and the inferior 2/3 of the posts, both the carbon fiber and glass fiber, what indicates that the application of the loading in longitudinal direction contributed with the uniformity in the stress distribution; in the superior third occurred stress concentrations in the angles of the resin walls in both casts, probably due to the existing geometry in the mentioned regions; there was a stress concentration in the right and left angles in the region of coronal portion of the resin with different quantitative values for the two casts indicating that the mechanical properties of the posts interfere in the stress concentration; a greater tension concentration occurred in the coronal portion in the resin and in the superior third of the glass fiber post due to a phenomenon called "stress shielding".
ACCESSION #
53722205

 

Related Articles

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics