A Comparative Evaluation of Stress Distribution, Deformation and Retentive Force of Three Different Partial Denture Framework in Two Removable Partial Denture Designs: A Finite Element Analytical Study


Authors : Dr.K. Anusha Ravindra; Dr. Malathi Dayalan

Volume/Issue : Volume 8 - 2023, Issue 2 - February

Google Scholar : https://bit.ly/3IIfn9N

Scribd : https://bit.ly/3KPh1uH

DOI : https://doi.org/10.5281/zenodo.7691914

The aim of this study is to evaluate and compare stress distribution, deformation and retentive force of three different partial denture framework in two removable partial denture designs.  Materials & Methodology: CBCT images of Kennedy’s class I & II mandibular arches were converted to STL file. HYPERMESH 10 software was used to convert 3D images into numerical models. Geometric model of the Kennedy’s class I & II frameworks were created using ANSYS 18 software and then was inserted in the bone model. Material properties of titanium alloy, acetal resin and PEEK was taken from the standard textbooks. The models were then transferred through the solid works stimulation program for finite element analysis to evaluate stress distribution, retention and deformation forces. A vertical force of 120N was applied on the occlusal surface of the teeth.  Results: The stresses induced on the residual ridges in Kennedy’s class I for titanium, acetal resin & Peek frame work was 5.08056Mpa, 5.08032Mpa &5.07888Mpa respectively and on primary abutment teeth was 1.75897Mpa, 2.43683Mpa & 2.34344Mpa respectively. The stresses induced on to the class I framework for titanium, acetal resin & PEEK was 30.4465Mpa, 10.2463Mpa &8.28491Mpa respectively. The stresses induced on the residual ridges in Kennedy’s class II for titanium, acetal resin & PEEK frame work was 4.50508Mpa, 3.45925Mpa & 3.53304Mpa respectively and on primary abutment was 1.9083Mpa, 2.52222Mpa &2.48319Mpa respectively. The stresses induced on to the class II framework for titanium, acetal resin & PEEK was 28.5811Mpa, 11.0531Mpa & 9.03564Mpa respectively. The retentive force for titanium, acetal resin & PEEK clasps was 1615.9N, 335N &1260.1N respectively in Kennedy’s class I framework. The retentive force for titanium, acetal resin & PEEK clasps was 1721.4N, 310.5N & 1155.4N respectively in Kennedy’s class II framework. The deformation force for class I titanium, acetal resin &PEEK clasps, was 0.009087mm, 0.00933mm & 0.009355mm respectively. The deformation force for class II titanium, acetal resin & PEEK clasps was0.004304mm, 0.004896mm & 0.004628mm respectively.  Conclusion: No significant difference between the von mises stress on the residual ridge was observed in Kennedy’s class I for all the three frameworks.Von mises stress on residual ridge from titanium framework was slightly higher when compared to acetal resin and PEEK frameworks for Kennedy’s class II.Von mises stress on the primary abutment teeth was the highest in Acetal resin framework and the least in titanium framework for both Kennedy’s class I & II. Retention force was highest in titanium clasp and least in acetal resin clasp in both Kennedy’s class I & II. Deformation was highest in acetal resin clasp and least in titanium clasp in both Kennedy’s class I & II.

Keywords : Removable Partial Denture, Finite Element Analysis, Titanium, Acetal Resin, PEEK, Stress Distribution, Deformation, Retention.

CALL FOR PAPERS


Paper Submission Last Date
30 - June - 2023

Paper Review Notification
In 1-2 Days

Paper Publishing
In 2-3 Days

Video Explanation for Published paper

Never miss an update from Papermashup

Get notified about the latest tutorials and downloads.

Subscribe by Email

Get alerts directly into your inbox after each post and stay updated.
Subscribe
OR

Subscribe by RSS

Add our RSS to your feedreader to get regular updates from us.
Subscribe