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An Evaluation of the Stress Pattern Distribution for Orthodontic Tooth Movements - A Finite Element Study


Affiliations
1 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh, India
2 Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh,, India
3 Department of Oral & Maxillofacial Pathology, Kanti Devi Dental College, Uttar Pradesh, India
4 Department of Periodontology, Bhojia Dental College, Himachal Pradesh, India
 

This study was conducted to evaluate stress pattern distribution in the periodontal ligament during various orthodontic tooth movements. Methods:A 3 dimensional FEM model of upper central incisor was developed from C.T scan images of the skull excluding the mandible. The principal stress obtained on the periodontal ligament due to various orthodontic loadings (tipping, bodily movement, intrusion, extrusion and rotations) were tested. Results: Intrusion, extrusion and rotation produced stresses concentrated at apex of ischolar_main. Bodily movement and tipping forces produce stress concentrated at the alveolar crest and not at the ischolar_main apex. Conclusion:Clinical implications of this study suggests that if the clinician is concerned about placing heavy stresses on the ischolar_main apex then vertical and rotational forces must be applied with caution.

Keywords

Finite Element Method, Mechanical Stress , Root Resorption.
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  • An Evaluation of the Stress Pattern Distribution for Orthodontic Tooth Movements - A Finite Element Study

Abstract Views: 317  |  PDF Views: 99

Authors

Sameer Gupta
Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh, India
Garima Gupta
Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh,, India
Manisha Sharma
Department of Oral & Maxillofacial Pathology, Kanti Devi Dental College, Uttar Pradesh, India
Pooja Sharma
Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh,, India
Sachin Goyal
Department of Periodontology, Bhojia Dental College, Himachal Pradesh, India
Pradeep kumar
Department of Orthodontics, Kanti Devi Dental College, Uttar Pradesh, India

Abstract


This study was conducted to evaluate stress pattern distribution in the periodontal ligament during various orthodontic tooth movements. Methods:A 3 dimensional FEM model of upper central incisor was developed from C.T scan images of the skull excluding the mandible. The principal stress obtained on the periodontal ligament due to various orthodontic loadings (tipping, bodily movement, intrusion, extrusion and rotations) were tested. Results: Intrusion, extrusion and rotation produced stresses concentrated at apex of ischolar_main. Bodily movement and tipping forces produce stress concentrated at the alveolar crest and not at the ischolar_main apex. Conclusion:Clinical implications of this study suggests that if the clinician is concerned about placing heavy stresses on the ischolar_main apex then vertical and rotational forces must be applied with caution.

Keywords


Finite Element Method, Mechanical Stress , Root Resorption.

References