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Evaluation of the stress patterns on the bone around an implant using vertical and angulated abutments: A finite element analysis study

Author: 
Dr. Ramya Kumari, S., Dr. Krishna Kishore, K., Dr. Gopinadh, A. and Dr. Sandeep, Ch.
Subject Area: 
Health Sciences
Abstract: 

Background: Dental implants offer several benefits over conventional tooth replacements. Angulated abutments or a combination of angulated and straight abutments were used to support prostheses. Implant placement relates to emergence profile of the implant prosthesis and use of preangulated abutments to fulfill esthetic and functional objectives in selected cases. Aim and Objective: The aim of the study was to evaluate stress patterns on the bone around an implant of vertical and angulated abutments using finite element analysis. The objective was to evaluate and compare the Von misesstress (overall stress) distribution of vertical (00) and angulated (100,200& 300) abutments in D2 and D3 types of density of bone. Materials and Method: This study was conducted using finite element method. Two models were generated to simulate the D2 and D3 density bone using the digitized data computed from the computer tomography scans. Four groups of models with 00,100,200 and 300 abutments were analysed in ANSYS software. Axial loads of 178N was applied on the cingulum area of all the models. Results: The results showed an increased magnitude of stresses of approximately 4.4 folds was observed at overall bone implant interface as angulations of abutments increased from 00 to 300 under axial loading in D2 and D3 density types of bone. Conclusion: This concludes that Von Mises stresses were higher in 300 angulated abutment and increases from 00, 100, 200 & 300 on axial loading of 178N. However there was no significant differences was observed in magnitude of stresses in both D2 and D3 types of bone.

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