Finite element analysis of stress distribution in autotransplanted molars.

Kırmalı, Ömer; Türker, Nurullah; Akar, Türker; Yilmaz, Burak (2022). Finite element analysis of stress distribution in autotransplanted molars. Journal of dentistry, 119, p. 104082. Elsevier Science 10.1016/j.jdent.2022.104082

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OBJECTIVE

The biomechanical response of an autotransplanted tooth and surrounding bone to occlusal loads is not well-known. The aim of the present study was to investigate the effect of root form and occlusal morphology on stress distribution in autotransplanted teeth and surrounding bone by using finite element analysis (FEA).

METHODS

Seven FEA models representing different autotransplanted tooth situations were generated: (a) first molar, (b) third molar, (c) root canal-treated third molar, (d) root canal-treated, ankylosed, third molar, (e) crowned third molar, (f) crowned and root canal-treated third molar, (g) root canal-treated, ankylosed, and crowned third molar. Load (200 N) was applied on the occlusal surface, parallel to the long axis of the tooth. Maximum von Mises stress values on dentin and surrounding bone were calculated for each situation.

RESULTS

Differences in stress distribution were observed among models. In ankylosed model, stress was primarily observed at the coronal region of the tooth. The stress was observed more at the coronal region of the tooth in crowned models compared with the non-crowned models. The stress distribution was homogeneous with root canal-treated and crowned autotransplanted tooth.

CONCLUSIONS

The occlusal morphology and root form of the autotransplanted tooth affected the stress in surrounding bone at the transfer site and the biomechanical response of the tooth. The stress was more homogeneous in crowned tooth and primarily observed at the coronal region, which may decrease the risk for root resorption.

CLINICAL SIGNIFICANCE

Root configuration, occlusal form and root canal treatment induce significant changes on the stress distribution on teeth and bone, including characteristic stress concentration and increased stress values. Clinicians can consider crowning autotransplanted teeth for improved stress distribution within the tooth structure.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry
04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology

UniBE Contributor:

Yilmaz, Burak

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0300-5712

Publisher:

Elsevier Science

Language:

English

Submitter:

Pubmed Import

Date Deposited:

07 Mar 2022 10:19

Last Modified:

04 Mar 2023 00:25

Publisher DOI:

10.1016/j.jdent.2022.104082

PubMed ID:

35247471

Uncontrolled Keywords:

Autotransplantation ankylosis biomimetic finite elemental analysis periodontal ligament

BORIS DOI:

10.48350/166602

URI:

https://boris.unibe.ch/id/eprint/166602

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