Characteristics of the Tooth in the Initial Movement: the Influence of the Restraint Site to the Periodontal Ligament and the Alveolar Bone

Overview

Journal Open Dent J

Publisher Bentham Open

Specialty Dentistry

Date 2009 Jul 10

PMID 19587799

Citations 2

Authors

Kyoko Shinya

Akikazu Shinya

Rizako Nakahara

Yuji Nakasone

Akiyoshi Shinya

Affiliations

Soon will be listed here.

Abstract

It is critical to clarify orthodontic load transfer mechanism from tooth to alveolar bone, and to determine the influence of applied orthodontic force on tooth behaviour. In this study, two dimensional (2-D) finite element (FE) models were constructed to simulate to mechanical behaviour observed during the initial movement of periodontal ligament (PDL) deformation, and to evaluate the effects of the presence of PDL and various restraint sites on tooth behaviour.A 2-D solid FE model of the tooth-PDL-alveolar bone system was constructed and investigated into stress distribution pattern and displacement. The first analysis was carried out with combinations of FE model with and without PDL. The second analysis was compared with three different sites restraint of alveolar bone. By incorporating PDL in FE models, excessively large stress values and deformation generated in a tooth and alveolar bone were relieved. Since restraint conditions did not affect a tooth and PDL, but had an effect on alveolar bone, orthodontic force necessary for tooth displacement was transmitted correctly. The results of this study revealed that inclusion of PDL in FE models is indispensable to transmit orthodontic force appropriately when investigating tooth behaviour for orthodontic treatment. Restrained sites affected stress distribution in alveolar bone.

Citing Articles

The Effect of Implant Length and Diameter on Stress Distribution around Single Implant Placement in 3D Posterior Mandibular FE Model Directly Constructed Form In Vivo CT.

Shinya A, Ishida Y, Miura D, Shinya A Materials (Basel). 2021; 14(23).

PMID: 34885508 PMC: 8658520. DOI: 10.3390/ma14237344.

Accuracy of three-dimensional finite element modeling using two different dental cone beam computed tomography systems.

Hasegawa A, Shinya A, Lassila L, Yokoyama D, Nakasone Y, Vallittu P Odontology. 2012; 101(2):210-5.

PMID: 22729237 DOI: 10.1007/s10266-012-0076-z.

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