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Three-dimensional finite element analysis of strain and stress distributions in endodontically treated maxillary central incisors restored with different post, core and crown materials.
Dent Mater. 2007 Aug; 23(8):983-93.DM

Abstract

OBJECTIVES

The present comparative analysis aimed at evaluating which combination of restorative materials resulted in the most homogeneous stress and strain distributions.

METHODS

A three-dimensional finite element analysis was performed. All the nodes on the external surface of the root were constrained in all directions. Eighteen experimental models with different material properties and configurations were simulated. An arbitrary load of 10N was applied at 60 degrees angle with tooth longitudinal axis on the palatal surface of the crown. Von Mises (equivalent stresses) energetic criterion was chosen.

RESULTS

In all the models the values of both strain and stress recorded at the middle third of the buccal aspect of the root surface were at their maxima. On the contrary, the minimum values were noticed at level of both the apical portion of the post and the root apex. The maximum stresses were evidenced at level of the cemento-enamel junction (CEJ) on both the buccal and palatal aspects of root cement and dentin. Stress progressively decreased from the outer to the inner part of the root and from the CEJ towards the incisal margin of the crown as well.

SIGNIFICANCE

The results of the present study would allow clinicians to make an informed choice from among available materials to restore endodontically treated teeth.

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Authors+Show Affiliations

Sorrentino R
Department of Restorative Dentistry and Dental Materials, University of Siena, Siena, Italy.
Aversa R
No affiliation info available
Ferro V
No affiliation info available
Auriemma T
No affiliation info available
Zarone F
No affiliation info available
Ferrari M
No affiliation info available
Apicella A
No affiliation info available

MeSH

CementationComposite ResinsComputer SimulationCrownsDental Stress AnalysisDentinElasticityFinite Element AnalysisGlassHumansIncisorMaxillaPliabilityPost and Core TechniqueShear StrengthTooth CervixTooth RootTooth, Nonvital

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17070903

Citation

Sorrentino, Roberto, et al. "Three-dimensional Finite Element Analysis of Strain and Stress Distributions in Endodontically Treated Maxillary Central Incisors Restored With Different Post, Core and Crown Materials." Dental Materials : Official Publication of the Academy of Dental Materials, vol. 23, no. 8, 2007, pp. 983-93.
Sorrentino R, Aversa R, Ferro V, et al. Three-dimensional finite element analysis of strain and stress distributions in endodontically treated maxillary central incisors restored with different post, core and crown materials. Dent Mater. 2007;23(8):983-93.
Sorrentino, R., Aversa, R., Ferro, V., Auriemma, T., Zarone, F., Ferrari, M., & Apicella, A. (2007). Three-dimensional finite element analysis of strain and stress distributions in endodontically treated maxillary central incisors restored with different post, core and crown materials. Dental Materials : Official Publication of the Academy of Dental Materials, 23(8), 983-93.
Sorrentino R, et al. Three-dimensional Finite Element Analysis of Strain and Stress Distributions in Endodontically Treated Maxillary Central Incisors Restored With Different Post, Core and Crown Materials. Dent Mater. 2007;23(8):983-93. PubMed PMID: 17070903.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Three-dimensional finite element analysis of strain and stress distributions in endodontically treated maxillary central incisors restored with different post, core and crown materials. AU - Sorrentino,Roberto, AU - Aversa,Raffaella, AU - Ferro,Valeria, AU - Auriemma,Tommaso, AU - Zarone,Fernando, AU - Ferrari,Marco, AU - Apicella,Antonio, Y1 - 2006/10/30/ PY - 2006/04/12/received PY - 2006/08/25/accepted PY - 2006/10/31/pubmed PY - 2007/10/12/medline PY - 2006/10/31/entrez SP - 983 EP - 93 JF - Dental materials : official publication of the Academy of Dental Materials JO - Dent Mater VL - 23 IS - 8 N2 - OBJECTIVES: The present comparative analysis aimed at evaluating which combination of restorative materials resulted in the most homogeneous stress and strain distributions. METHODS: A three-dimensional finite element analysis was performed. All the nodes on the external surface of the root were constrained in all directions. Eighteen experimental models with different material properties and configurations were simulated. An arbitrary load of 10N was applied at 60 degrees angle with tooth longitudinal axis on the palatal surface of the crown. Von Mises (equivalent stresses) energetic criterion was chosen. RESULTS: In all the models the values of both strain and stress recorded at the middle third of the buccal aspect of the root surface were at their maxima. On the contrary, the minimum values were noticed at level of both the apical portion of the post and the root apex. The maximum stresses were evidenced at level of the cemento-enamel junction (CEJ) on both the buccal and palatal aspects of root cement and dentin. Stress progressively decreased from the outer to the inner part of the root and from the CEJ towards the incisal margin of the crown as well. SIGNIFICANCE: The results of the present study would allow clinicians to make an informed choice from among available materials to restore endodontically treated teeth. SN - 0109-5641 UR - https://www.unboundmedicine.com/medline/citation/17070903/Three_dimensional_finite_element_analysis_of_strain_and_stress_distributions_in_endodontically_treated_maxillary_central_incisors_restored_with_different_post_core_and_crown_materials_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0109-5641(06)00241-7 DB - PRIME DP - Unbound Medicine ER -