[Home ] [Archive]   [ فارسی ]  
Search in website

Advanced Search
..
:: Volume 5, Issue 5 (1-2012) ::
3 2012, 5(5): 0-0 Back to browse issues page
Evaluation of stress distribution of implant‑retained mandibular overdenture with different vertical restorative spaces: A finite element analysis
Behnaz Ebadian , Mahmoud Farzin , Saeid Talebi , Niloufar Khodaeian *
3Dental Materials Research Center and Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences
Abstract:   (2246 Views)

 Background: Available restorative space and bar height is an important factor in stress distribution of implant‑supported overdentures. The purpose of this study was to evaluate the effect of different vertical restorative spaces and different bar heights on the stress distribution around implants by 3D finite element analysis.

 Materials and Methods: 3D finite element models were developed from mandibular overdentures with two implants in the interforaminal region. In these models, four different bar heights from gingival crest (0.5, 1, 1.5, 2 mm) with 15 mm occlusal plane height and three different occlusal plane heights from gingival crest (9, 12, 15 mm) with 2 mm bar height were analyzed. A vertical unilateral and a bilateral load of 150 N were applied to the central occlusal fossa of the first molar and the stress of bone around implant was analyzed by finite element analysis.

Results: By increasing vertical restorative space, the maximum stress values around implants were found to be decreased in unilateral loading models but slightly increased in bilateral loading cases. By increasing bar height from gingival crest, the maximum stress values around implants were found to be increased in unilateral loading models but slightly decreased in bilateral loading cases. In unilateral loading models, maximum stress was found in a model with 9 mm occlusal plane height and 1.5 mm bar height (6.254 MPa), but in bilateral loading cases, maximum stress was found in a model with 15 mm occlusal plane height and 0.5 mm bar height (3.482 MPa).

 Conclusion: The reduction of bar height and increase in the thickness of acrylic resin base in implant‑supported overdentures are biomechanically favorable and may result in less stress in periimplant bone.


 Source: Dental Research Journal

 Full Text

Keywords: Finite element analysis, implant, overdenture, stress
     
Type of Study: Research | Subject: Prothtodontics
Received: 2013/06/11 | Published: 2012/01/15
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Ebadian B, Farzin M, Talebi S, Khodaeian N. Evaluation of stress distribution of implant‑retained mandibular overdenture with different vertical restorative spaces: A finite element analysis. 3 2012; 5 (5)
URL: http://idai.ir/article-1-1123-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 5, Issue 5 (1-2012) Back to browse issues page
جامعه اسلامی دندانپزشکان Islamic Dental Association of IRAN

کلیه حقوق سایت متعلق به جامعه اسلامی دندانپزشکان ایران است. تماس با ما

Persian site map - English site map - Created in 0.04 seconds with 36 queries by YEKTAWEB 4710