Stress Induced in the Periodontal Ligament Under Orthodontic Loading (Part I): A Finite Element Method Study Using Linear Analysis

Overview

Journal J Int Oral Health

Date 2015 Oct 15

PMID 26464555

Citations 18

Authors

M Hemanth

Shilpi Deoli

H P Raghuveer

M S Rani

Chatura Hegde

B Vedavathi

Affiliations

Soon will be listed here.

Abstract

Background: Orthodontic tooth movement is a complex procedure that occurs due to various biomechanical changes in the periodontium. Optimal orthodontic forces yield maximum tooth movement whereas if the forces fall beyond the optimal threshold it can cause deleterious effects. Among various types of tooth movements intrusion and lingual root torque are associated with causing root resoprtion, especially with the incisors. Therefore in this study, the stress patterns in the periodontal ligament (PDL) were evaluated with intrusion and lingual root torque using finite element method (FEM).

Materials And Methods: A three-dimensional (3D) FEM model of the maxillary incisors was generated using SOLIDWORKS modeling software. Stresses in the PDL were evaluated with intrusive and lingual root torque movements by a 3D FEM using ANSYS software using linear stress analysis.

Results: It was observed that with the application of intrusive load compressive stresses were distributed at the apex whereas tensile stress was seen at the cervical margin. With the application of lingual root torque maximum compressive stress was distributed at the apex and tensile stress was distributed throughout the PDL.

Conclusion: For intrusive and lingual root torque movements stress values over the PDL was within the range of optimal stress value as proposed by Lee, with a given force system by Proffit as optimum forces for orthodontic tooth movement using linear properties.

Citing Articles

Impact of Molar Distalization with Clear Aligners on Periodontal Ligament Stress and Root Resorption Risk: A Systematic Review of 3D Finite Element Analysis Studies.

Nazeri A, Castillo Jr J, Ghaffari-Rafi A Dent J (Basel). 2025; 13(2).

PMID: 39996940 PMC: 11854506. DOI: 10.3390/dj13020065.

Five Numerical Methods to Assess the Ischemic Risks in Dental Pulp and Neuro-Vascular Bundle Under Orthodontic Movements in Intact Periodontium In Vitro.

Moga R, Olteanu C, Delean A Dent J (Basel). 2025; 13(1).

PMID: 39851591 PMC: 11763361. DOI: 10.3390/dj13010015.

The Amount of Orthodontic Force Reaching the Dental Pulp and Neuro-Vascular Bundle During Orthodontic Movements in the Intact Periodontium.

Moga R, Olteanu C, Delean A Medicina (Kaunas). 2025; 60(12.

PMID: 39768924 PMC: 11727835. DOI: 10.3390/medicina60122045.

Periodontal Breakdown, Orthodontic Movements and Pulpal Ischemia Correlations-A Comparison Between Five Study Methods.

Moga R, Olteanu C, Delean A J Clin Med. 2024; 13(23).

PMID: 39685521 PMC: 11642841. DOI: 10.3390/jcm13237062.

Ischemic Risks Induced by Larger Orthodontic Forces on Dental Pulp and Neuro-Vascular Bundle in Reduced Periodontium.

Moga R, Olteanu C, Delean A J Clin Med. 2024; 13(22).

PMID: 39597842 PMC: 11594315. DOI: 10.3390/jcm13226698.

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