alexa The Impact of Distal Cantilever Extension on the Stress Around Four Implants Connected by a Bar Retained Palateless Overdenture (In Vitro Stress Analysis)
ISSN: 2332-0702

Journal of Oral Hygiene & Health
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Research Article

The Impact of Distal Cantilever Extension on the Stress Around Four Implants Connected by a Bar Retained Palateless Overdenture (In Vitro Stress Analysis)

Nesreen El Sayed El Mekawy*, Ahmed Khalifa, Zylan Nyazi Baker, Pham El Quan and Wael Qashout

Faculty of Dentistry, Mansoura University, El Gomhouria St, Mit Khamis WA Kafr Al Mougi, Mansoura, Dakahlia Governorate, Egypt

*Corresponding Author:
Nesreen El Sayed El Mekawy
Faculty of Dentistry, Mansoura University
El Gomhouria St, Mit Khamis WA Kafr Al Mougi
Mansoura, Dakahlia Governorate 35516, Egypt
Tel: 00201227884473
E-mail: nesreen_ [email protected]

Received Date: May 23, 2017; Accepted Date: June 24, 2017; Published Date: June 30, 2017

Citation: EI Mekawy N, Khalifa A, Baker ZN, Quan P, Qashout W (2017) The Impact of Distal Cantilever Extension on the Stress Around Four Implants Connected by a Bar Retained Palateless Overdenture (In Vitro Stress Analysis). J Oral Hyg Health 5: 218. doi: 10.4172/2332-0702.1000218

Copyright: © 2017 Mekawy NESE, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Aim: This in vitro research was aimed to compare the impact of distal cantilever extension on the stress around four implants retained palateless overdenture by means of a bar. Materials and methods: Four implants were placed bilaterally in lateral incisor and the first premolar positions of edentulous acrylic resin maxillary model; connected bar with 7 mm distal cantilever extension with soft liner female retentive element was used. Eight strain gauges were bonded to the acrylic resin at the mesial and distal surfaces of each implant, stress was measured, then the 7 mm cantilever extension was trimmed and the stress measured for the bar without distal cantilever extension. Results: Bar with distal cantilever extension demonstrate a significant increase in stress compared to the bar without distal cantilever extension in unilateral loading and bilateral loading. During unilateral loading in bar with distal cantilever extension and bar without distal cantilever extension the maximum stress was recorded at mesial side of posterior implant of loading side. Conclusion: The four implants connected with the bar without distal cantilever extension demonstrates lower stress than bar with distal cantilever extension.


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