ID Design 2012/DOOEL Skopje, Republic of
Macedonia
Open Access Macedonian Journal of Medical Sciences.
https://doi.org/10.3889/oamjms.2017.047
eISSN: 1857-9655
Stomatology
|
|
Influence of Number of Implants
and Attachment Type on Stress Distribution in Mandibular Implant-Retained
Overdentures: Finite Element Analysis
Mohamed I. El-Anwar1*, Eman A. El-Taftazany2,
Hamdy A. Hamed3, Mohamed A. Abd ElHay2
1Mechanical Engineering Department, National Research Centre,
Cairo, Egypt; 2Removable Prosthodontics Department, Faculty of
Dentistry, Misr International University, Cairo Governorate, Egypt; 3Removable
Prosthodontics Department, Faculty of Oral & Dental Medicine, Cairo
University, Cairo, Egypt
AIM: This study aimed to compare the stresses generated by using two
or four root form dental implants supporting mandibular overdentures that
were retained with ball and locator attachments.
METHODS: Under ANSYS environment, four 3D finite element models were
prepared. These models simulated complete overdentures supported by two or
four implants with either ball or locator attachments as a connection
mechanism. The models’ components were created by CAD/CAM package then were
imported to ANSYS. Load of 100 N was applied at the right premolar/molar
region vertically and at an oblique angle of 110° from lingual direction.
RESULTS: Within the conditions of this research, in all cases, it was
found that cortical and cancellous bone regions were the least to be
stressed. Also, the ball attachment produced higher stresses.
CONCLUSION: Caps deformation and stresses are negligible in cases of
using locator attachment in comparison to ball attachments. This may
indicate longer lifetime and less repair/maintenance operations in implant
overdentures retained by locator attachments. Although the study revealed
that bone was insensitive to a number of implants or attachment type, it may
be recommended to use two implants in the canine region than using four,
where the locator attachments were found to be better.
..................
Citation: El-Anwar MI, El-Taftazany EA, Hamed HA,
Abd ElHay MA. Influence of Number of Implants and Attachment Type on Stress
Distribution in Mandibular Implant-Retained Overdentures: Finite Element
Analysis. Open Access Maced J Med Sci. https://doi.org/10.3889/oamjms.2017.047
Keywords: Finite element analysis; Implant; Overdenture; Attachment.
*Correspondence: Mohamed I. El-Anwar. National Research Centre, 33 El
Bohouth St., Dokki, Giza, P.O. 12622, Egypt. Phone: +2 0122 2431297. Fax: +2
02 33370931. Email: anwar_eg@yahoo.com
Received: 10-Jan-2017; Revised: 25-Feb-2017; Accepted: 26-Feb-2017; Online
first: 22-Mar-2017
Copyright: © 2017 Mohamed I. El-Anwar, Eman A. El-Taftazany, Hamdy A.
Hamed, Mohamed A. Abd ElHay. This is an open-access article
distributed under the terms of the Creative Commons Attribution-NonCommercial
4.0 International License (CC BY-NC 4.0).
Funding: This research did not receive any financial support.
Competing Interests: The authors have declared that no competing
interests exist.
|
<
Previous
|
Next Article >
Table of contents
This Article
(free)
Full text (pdf)
Full text OnlineFirst (pdf)
Google Scholar
-
El-Anwar MI
-
El-Taftazany EA
-
Hamed HA
-
Abd ElHay MA
PubMed
- El-Anwar MI
- El-Taftazany EA
- Hamed HA
- Abd ElHay MA
|