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VOLUME 9 , ISSUE 3 ( May-June, 2018 ) > List of Articles

ORIGINAL RESEARCH

Influence of Attachment Configuration on Stresses in Completely Edentulous Mandibular Ridge with an Implant-retained Overdenture: A Finite Element Analysis

Rohit Shetty, Srivatsa Gopalakrishna, Usha Bollineni, Ipsha Singh

Keywords : Ball attachment, Implant-retained overdenture, Nylon cap, Peri-implant stresses, Resilient attachment, Singlepiece implant

Citation Information : Shetty R, Gopalakrishna S, Bollineni U, Singh I. Influence of Attachment Configuration on Stresses in Completely Edentulous Mandibular Ridge with an Implant-retained Overdenture: A Finite Element Analysis. World J Dent 2018; 9 (3):208-214.

DOI: 10.5005/jp-journals-10015-1535

License: CC BY-SA 4.0

Published Online: 01-06-2018

Copyright Statement:  Copyright © 2018; The Author(s).


Abstract

Aim: To evaluate and compare the stress distribution in periimplant area and posterior region of completely edentulous mandible rehabilitated using implant-retained overdenture (IOD) with two types of ball attachment configuration, i.e., rigid and resilient. Materials and methods: Two mathematical models were prepared simulating completely edentulous mandibular ridge. Model 1 represented implant with rigid stud attachment. Model 2 represented implant with resilient stud attachment. Both the models were subjected to the compressive force of 35 N. The stresses in the peri-implant area and posterior region of the mandible were evaluated and compared for both the models. Results: The IOD with rigid stud configuration showed 12.1% higher peri-implant stresses than resilient configuration, whereas the resultant stress values in posterior edentulous region were 1.5% lower with resilient configuration. Conclusion: Highest stress value was seen in the crestal part of bone around the implant with both rigid and resilient attachment configuration. Implant-retained overdentures with resilient stud attachment showed better dissipation of forces when compared with rigid attachment. Clinical significance: Correct choice of attachment configuration can influence the peri-implant stresses in IOD, which in turn reduces the complications that can be a result of excessive stresses around the implant.


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