IP Indian Journal of Orthodontics and Dentofacial Research
Official Publication of Khyati Education And Research Foundation
Official Publication of Khyati Education And Research Foundation
Print ISSN: 2581-9356
Online ISSN: 2581-9364
CODEN : IIJOCV
IP Indian Journal of Orthodontics and Dentofacial Research (IJODR) open access, peer-reviewed quarterly journal publishing since 2015 and is published under the Khyati Education and Research Foundation (KERF), is registered as a non-profit society (under the society registration act, 1860), Government of India with the vision of various accredited vocational courses in healthcare, education, paramedical, yoga, publication, teaching and research activity, with the aim of faster and better dissemination of knowledge, we will be publishing the more...Original Article
Author Details :
Volume : 8, Issue : 3, Year : 2022
Article Page : 173-179
https://doi.org/10.18231/j.ijodr.2022.030
Abstract
Introduction: Role ofErupting Mandibular 3 molars as a cause of incisor crowding in the lower arch continues to be controversial. The relation between 3 molar and dental crowding has not been established.
Aims and Objectives: To determine the area of stress distribution and tooth displacement during eruption of mandibular 3 molar in mesioangular and horizontal impaction.
Materials and Methods: Three dimensional finite element models were generated based on computed tomography scan data. From computed tomographic scans of a human mandible two additional finite element models were generated: a mandibular model with mesioangular impaction and second model with horizontal impaction. To investigate the stress distribution to the mandible, and tooth displacement eruptive force of 10 grams was applied.
Results: High concentration of stresses was seen at the inferior border of the mandible and lowest concentration of stress was present at symphysis for both the models. The tooth displacement for both mesio-angular and horizontal impaction caused mesial tilting of all the teeth i.e. from 2 molar to central incisor; with greatest tilting of 2 molar. Along the vertical plane, there was extrusion seen with 2 molar with mesio-angular impaction and extrusion in 2 molar and 1 molar with horizontal impaction And all the teeth exhibited buccal flaring in case of both impaction.
Conclusion: There is significant level of tooth displacement from 2 molar towards the incisors. These changes occurring along the dental arch must be taken into consideration while planning for prophylactic extraction of third molars.
Keywords: Mesio-angular impaction, Horizontal impaction, Finite element study, Stress distribution, Tooth displacement.
How to cite : Kumar A, Bhandhari M, Fareeduddin M B, The effects of erupting mandibular 3 molar on the dental arch: A FEM study. IP Indian J Orthod Dentofacial Res 2022;8(3):173-179
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