Finite Element Analysis of Stress Distribution around Implantretain Palatelessoverdenture by Using Ball Attachment
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2019, Vol 18, Issue 3
Abstract
Aim of study: this finite element study aimed to analyze stress distribution within the number of implants used to retained implant palatelessoverdenture by ball attachment. Material and Methods: This study was carried out on maxillary completely edentulous clear acrylic resin model with four dummy implants inserted, two in canines’ area and two in second premolars region. The ridge was covered by auto-polymerized soft-liner material to simulate the mucosa. The model was duplicated with dental stone and the palatelessoverdenture was prepared over the implants and retained by ball attachment. Model was scanned using a 3D scanner and geometry information was recorded in IGES format. Finite element modeling was carried out using ANSYS version 16.0. Result:The lowest stresses (Von Mises) were induced on spongy bone of ball attachments in vertical unilateral loading which value was (0.66 MPa). With ball attachments the stresses in spongy bone were nearly the same with unilateral and bilateral vertical loading. The simulated mucosa was higher stresses induced with ball attachment in bilateral vertical loading if compared to attachments with unilateral vertical loading. Conclusion: within the limitations of the study it was observed that in compact bone and spongy bone the highest Von Mises stresses were observed ball attachments with vertical bilateral loading while lowest stresses were induced in ball attachments with vertical unilateral loading.
Authors and Affiliations
Mostafa Ekmekrahy, Ahmed Khalifa Khalifa, Mohamed I. M. El- Anwar, Nesreen El Mekawy
Keywords
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- EP ID EP554679
- DOI 10.9790/0853-1803042832.
- Views 99
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