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Baba Farid University Dental Journal
Year : 2020, Volume : 10, Issue : 1
First page : ( 3) Last page : ( 8)
Print ISSN : 0976-8181. Online ISSN : 2230-7273.

Comparative evaluation of stress changes in mandible with Removable and Fixed Functional appliance -A Finite element study

Chaudhry Anshul1*, Chaudhary Girish2, Gupta Ashish3, Jairath Rajan4

1Reader, Department Of Orthodontics, Christian Dental College, CMC, Ludhiana-141010, Punjab, India

2Reader, Department of Orthodontics, Baba Jaswant Singh Dental College, Hospital & Research Institute, Chandigarh Road, Ludhiana-141010, Punjab, India

3Prof and Head, Department of Orthodontics, Vyas Dental College and Hospital, Jodhpur, Rajasthan, India

4Professor and Head, Department Of Orthodontics, Christian Dental College, CMC, Ludhiana-141010, Punjab, India

*Corresponding Author: Dr Anshul Chaudhry, Reader, Department Of Orthodontics, Christian Dental College, CMC, Ludhiana-141010, Punjab, India, Email: dr.anshulchaudhry@gmail.com

Online published on 13 November, 2020.

Abstract

Objective

The purpose of the study was to analyse the effects of twin block myofunctional appliance and Forsus appliance on the mandible with Finite Element method, which is a 3-dimensional (3D) finite element stress analysis.

Methods

Five 3 Dimensional Models of the mandibles were constructed from the images generated from CBCT, of patients undergoing removable and fixed functional appliance treatment. The output was analysed with the FEM, and highest Von Mises stress and maximum Principal stress regions were evaluated.

Results

Model of the mandible with Fixed Functional appliance (Forsus) showed more areas of stress as seen with the model of mandible with Twin Block (Removable functional appliance).

Conclusion

Fixed Functional appliance as studied by FEM causes increase in the von Mises stress and Maximum Principal Stress in both parts of the mandible i.e. the condylar region and cortical bone by more than 2 times.

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Keywords

FEM, Functional, Removable, Fixed Functional, CBCT.

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