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ORIGINAL RESEARCH
Year : 2016  |  Volume : 8  |  Issue : 2  |  Page : 232-237

Evaluation of Centre of Resistance in Tooth with Different Levels of Bone: A Finite Element Method Study

Chakravarthi Sushil1, S Srinivas2, K Ravi3, R Krishnaraj3, S Dilip3, D Davis1
1 Senior Lecturer, Department of Orthodontia, SRM Dental College, Chennai, Tamil Nadu, India
2 Reader, Department of Orthodontia, SRM Dental College, SRM University, Chennai, Tamil Nadu, India
3 Professor, Department of Orthodontia, SRM Dental College, SRM University, Chennai, Tamil Nadu, India

Correspondence Address:
Chakravarthi Sushil
Senior Lecturer, Department of Orthodontia, SRM Dental College, Chennai, Tamil Nadu, India

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Source of Support: None, Conflict of Interest: None


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Background: The aim of this study is to evaluate the center of resistance (CRes) and rotation (CRot) in maxillary incisors with different levels of alveolar bone. Subjects and Methods : In this study, the following steps were employed namely, (1) Preprocessing: The creation of geometric model, mesh generation, and boundary conditions. (2) Postprocessing: The tooth movement and determination of CRes and CRot. Results: The results reveal that bone loss causes CRes movement toward the apex and its relative distance to the alveolar crest decreases at the same time. The study also suggested a decrease of the distance between CRes and CRot with increase of alveolar bone loss. Conclusion: The study showed that the orthodontic forces should be kept as light as possible with a decrease in alveolar bone height. Applied force and moment magnitudes must be reduced in proportion to maintain physiologically tolerable movements with minimal damage to these supporting structures.


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© Journal of International Oral Health | Published by Wolters Kluwer - Medknow
Online since 15th Nov, 2016