Elastic modulus of posts and the risk of root fracture

Josete B C Meira, Camila O M Espósito, Mayra F Z Quitero, Isis A V P Poiate, Carmem Pfeifer, Carina B. Tanaka, Rafael Y. Ballester

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The definition of an optimal elastic modulus for a post is controversial. This work hypothesized that the influence of the posts' elastic modulus on dentin stress concentration is dependent on the load direction. The objective was to evaluate, using finite element analysis, the maximum principal stress (σmax) on the root, using posts with different elastic modulus submitted to different loading directions. Nine 3D models were built, representing the dentin root, gutta-percha, a conical post and the cortical bone. The softwares used were: MSC.PATRAN2005r2 (preprocessing) and MSC.Marc2005r2 (processing). Load of 100 N was applied, varying the directions (0°, 45° and 90°) in relation to the post's long axis. The magnitude and direction of the σmax were recorded. At the 45° and 90° loading, the highest values of σmax were recorded for the lowest modulus posts, on the cervical region, with a direction that suggests debonding of the post. For the 0° loading, the highest values of σmax were recorded for higher modulus posts, on the apical region, and the circumferential direction suggests vertical root fracture. The hypothesis was accepted: the effect of the elastic modulus on the magnitude and direction of the σmax generated on the root was dependent on the loading direction.

Original languageEnglish (US)
Pages (from-to)394-398
Number of pages5
JournalDental Traumatology
Volume25
Issue number4
DOIs
StatePublished - Aug 2009
Externally publishedYes

Fingerprint

Elastic Modulus
Dentin
Gutta-Percha
Finite Element Analysis
Direction compound
Software

ASJC Scopus subject areas

  • Oral Surgery

Cite this

Meira, J. B. C., Espósito, C. O. M., Quitero, M. F. Z., Poiate, I. A. V. P., Pfeifer, C., Tanaka, C. B., & Ballester, R. Y. (2009). Elastic modulus of posts and the risk of root fracture. Dental Traumatology, 25(4), 394-398. https://doi.org/10.1111/j.1600-9657.2009.00772.x

Elastic modulus of posts and the risk of root fracture. / Meira, Josete B C; Espósito, Camila O M; Quitero, Mayra F Z; Poiate, Isis A V P; Pfeifer, Carmem; Tanaka, Carina B.; Ballester, Rafael Y.

In: Dental Traumatology, Vol. 25, No. 4, 08.2009, p. 394-398.

Research output: Contribution to journalArticle

Meira, JBC, Espósito, COM, Quitero, MFZ, Poiate, IAVP, Pfeifer, C, Tanaka, CB & Ballester, RY 2009, 'Elastic modulus of posts and the risk of root fracture', Dental Traumatology, vol. 25, no. 4, pp. 394-398. https://doi.org/10.1111/j.1600-9657.2009.00772.x
Meira JBC, Espósito COM, Quitero MFZ, Poiate IAVP, Pfeifer C, Tanaka CB et al. Elastic modulus of posts and the risk of root fracture. Dental Traumatology. 2009 Aug;25(4):394-398. https://doi.org/10.1111/j.1600-9657.2009.00772.x
Meira, Josete B C ; Espósito, Camila O M ; Quitero, Mayra F Z ; Poiate, Isis A V P ; Pfeifer, Carmem ; Tanaka, Carina B. ; Ballester, Rafael Y. / Elastic modulus of posts and the risk of root fracture. In: Dental Traumatology. 2009 ; Vol. 25, No. 4. pp. 394-398.
@article{e588d9b33f6a4ba29884bf0968a61743,
title = "Elastic modulus of posts and the risk of root fracture",
abstract = "The definition of an optimal elastic modulus for a post is controversial. This work hypothesized that the influence of the posts' elastic modulus on dentin stress concentration is dependent on the load direction. The objective was to evaluate, using finite element analysis, the maximum principal stress (σmax) on the root, using posts with different elastic modulus submitted to different loading directions. Nine 3D models were built, representing the dentin root, gutta-percha, a conical post and the cortical bone. The softwares used were: MSC.PATRAN2005r2 (preprocessing) and MSC.Marc2005r2 (processing). Load of 100 N was applied, varying the directions (0°, 45° and 90°) in relation to the post's long axis. The magnitude and direction of the σmax were recorded. At the 45° and 90° loading, the highest values of σmax were recorded for the lowest modulus posts, on the cervical region, with a direction that suggests debonding of the post. For the 0° loading, the highest values of σmax were recorded for higher modulus posts, on the apical region, and the circumferential direction suggests vertical root fracture. The hypothesis was accepted: the effect of the elastic modulus on the magnitude and direction of the σmax generated on the root was dependent on the loading direction.",
author = "Meira, {Josete B C} and Esp{\'o}sito, {Camila O M} and Quitero, {Mayra F Z} and Poiate, {Isis A V P} and Carmem Pfeifer and Tanaka, {Carina B.} and Ballester, {Rafael Y.}",
year = "2009",
month = "8",
doi = "10.1111/j.1600-9657.2009.00772.x",
language = "English (US)",
volume = "25",
pages = "394--398",
journal = "Dental Traumatology",
issn = "1600-4469",
publisher = "Blackwell Munksgaard",
number = "4",

}

TY - JOUR

T1 - Elastic modulus of posts and the risk of root fracture

AU - Meira, Josete B C

AU - Espósito, Camila O M

AU - Quitero, Mayra F Z

AU - Poiate, Isis A V P

AU - Pfeifer, Carmem

AU - Tanaka, Carina B.

AU - Ballester, Rafael Y.

PY - 2009/8

Y1 - 2009/8

N2 - The definition of an optimal elastic modulus for a post is controversial. This work hypothesized that the influence of the posts' elastic modulus on dentin stress concentration is dependent on the load direction. The objective was to evaluate, using finite element analysis, the maximum principal stress (σmax) on the root, using posts with different elastic modulus submitted to different loading directions. Nine 3D models were built, representing the dentin root, gutta-percha, a conical post and the cortical bone. The softwares used were: MSC.PATRAN2005r2 (preprocessing) and MSC.Marc2005r2 (processing). Load of 100 N was applied, varying the directions (0°, 45° and 90°) in relation to the post's long axis. The magnitude and direction of the σmax were recorded. At the 45° and 90° loading, the highest values of σmax were recorded for the lowest modulus posts, on the cervical region, with a direction that suggests debonding of the post. For the 0° loading, the highest values of σmax were recorded for higher modulus posts, on the apical region, and the circumferential direction suggests vertical root fracture. The hypothesis was accepted: the effect of the elastic modulus on the magnitude and direction of the σmax generated on the root was dependent on the loading direction.

AB - The definition of an optimal elastic modulus for a post is controversial. This work hypothesized that the influence of the posts' elastic modulus on dentin stress concentration is dependent on the load direction. The objective was to evaluate, using finite element analysis, the maximum principal stress (σmax) on the root, using posts with different elastic modulus submitted to different loading directions. Nine 3D models were built, representing the dentin root, gutta-percha, a conical post and the cortical bone. The softwares used were: MSC.PATRAN2005r2 (preprocessing) and MSC.Marc2005r2 (processing). Load of 100 N was applied, varying the directions (0°, 45° and 90°) in relation to the post's long axis. The magnitude and direction of the σmax were recorded. At the 45° and 90° loading, the highest values of σmax were recorded for the lowest modulus posts, on the cervical region, with a direction that suggests debonding of the post. For the 0° loading, the highest values of σmax were recorded for higher modulus posts, on the apical region, and the circumferential direction suggests vertical root fracture. The hypothesis was accepted: the effect of the elastic modulus on the magnitude and direction of the σmax generated on the root was dependent on the loading direction.

UR - http://www.scopus.com/inward/record.url?scp=67651247163&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67651247163&partnerID=8YFLogxK

U2 - 10.1111/j.1600-9657.2009.00772.x

DO - 10.1111/j.1600-9657.2009.00772.x

M3 - Article

VL - 25

SP - 394

EP - 398

JO - Dental Traumatology

JF - Dental Traumatology

SN - 1600-4469

IS - 4

ER -