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Evaluation of the biomechanical behavior of maxillary central incisors restored by means of endocrowns compared to a natural tooth: a 3D static linear finite elements analysis.
Dent Mater. 2006 Nov; 22(11):1035-44.DM

Abstract

OBJECTIVE

The present study aimed at evaluating different restoring configurations of a crownless maxillary central incisor, in order to compare the biomechanical behavior of the restored tooth with that of a sound tooth.

MATERIALS AND METHODS

A 3D FE model of a maxillary central incisor is presented. An arbitrary static force of 10 N was applied with an angulation of 125 degrees to the tooth longitudinal axis at level of the palatal surface of the crown. Different material configurations were tested: composite, syntered alumina, feldspathic ceramic endocrowns and glass post resorations with syntered alumina and feldspathic ceramic crown.

RESULTS

High modulus materials used for the restoration strongly alter the natural biomechanical behavior of the tooth. Critical areas of high stress concentration are the restoration-cement-dentin interface both in the root canal and on the buccal and lingual aspects of the tooth-restoration interface. Materials with mechanical properties underposable to that of dentin or enamel improve the biomechanical behavior of the restored tooth reducing the areas of high stress concentration.

SIGNIFICANCE

The use of endocrown restorations present the advantage of reducing the interfaces of the restorative system. The choice of the restorative materials should be carefully evaluated. Materials with mechanical properties similar to those of sound teeth improve the reliability of the restoartive system.

Authors+Show Affiliations

Zarone F
Second University of Naples, DISPAMA, Material Division, Aversa, Italy.
Sorrentino R
No affiliation info available
Apicella D
No affiliation info available
Valentino B
No affiliation info available
Ferrari M
No affiliation info available
Aversa R
No affiliation info available
Apicella A
No affiliation info available

MeSH

Aluminum OxideAluminum SilicatesBiomechanical PhenomenaCeramicsComposite ResinsComputer SimulationCrownsDental EnamelDental MaterialsDental PorcelainDental Pulp CavityDental Stress AnalysisDentinElasticityFinite Element AnalysisGlassHumansImaging, Three-DimensionalIncisorMaxillaModels, BiologicalPost and Core TechniquePotassium CompoundsResin CementsStress, Mechanical

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

16406084

Citation

Zarone, Fernando, et al. "Evaluation of the Biomechanical Behavior of Maxillary Central Incisors Restored By Means of Endocrowns Compared to a Natural Tooth: a 3D Static Linear Finite Elements Analysis." Dental Materials : Official Publication of the Academy of Dental Materials, vol. 22, no. 11, 2006, pp. 1035-44.
Zarone F, Sorrentino R, Apicella D, et al. Evaluation of the biomechanical behavior of maxillary central incisors restored by means of endocrowns compared to a natural tooth: a 3D static linear finite elements analysis. Dent Mater. 2006;22(11):1035-44.
Zarone, F., Sorrentino, R., Apicella, D., Valentino, B., Ferrari, M., Aversa, R., & Apicella, A. (2006). Evaluation of the biomechanical behavior of maxillary central incisors restored by means of endocrowns compared to a natural tooth: a 3D static linear finite elements analysis. Dental Materials : Official Publication of the Academy of Dental Materials, 22(11), 1035-44.
Zarone F, et al. Evaluation of the Biomechanical Behavior of Maxillary Central Incisors Restored By Means of Endocrowns Compared to a Natural Tooth: a 3D Static Linear Finite Elements Analysis. Dent Mater. 2006;22(11):1035-44. PubMed PMID: 16406084.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of the biomechanical behavior of maxillary central incisors restored by means of endocrowns compared to a natural tooth: a 3D static linear finite elements analysis. AU - Zarone,Fernando, AU - Sorrentino,Roberto, AU - Apicella,Davide, AU - Valentino,Bartolomeo, AU - Ferrari,Marco, AU - Aversa,R, AU - Apicella,A, Y1 - 2006/01/10/ PY - 2005/06/22/received PY - 2005/10/21/revised PY - 2005/11/03/accepted PY - 2006/1/13/pubmed PY - 2007/1/6/medline PY - 2006/1/13/entrez SP - 1035 EP - 44 JF - Dental materials : official publication of the Academy of Dental Materials JO - Dent Mater VL - 22 IS - 11 N2 - OBJECTIVE: The present study aimed at evaluating different restoring configurations of a crownless maxillary central incisor, in order to compare the biomechanical behavior of the restored tooth with that of a sound tooth. MATERIALS AND METHODS: A 3D FE model of a maxillary central incisor is presented. An arbitrary static force of 10 N was applied with an angulation of 125 degrees to the tooth longitudinal axis at level of the palatal surface of the crown. Different material configurations were tested: composite, syntered alumina, feldspathic ceramic endocrowns and glass post resorations with syntered alumina and feldspathic ceramic crown. RESULTS: High modulus materials used for the restoration strongly alter the natural biomechanical behavior of the tooth. Critical areas of high stress concentration are the restoration-cement-dentin interface both in the root canal and on the buccal and lingual aspects of the tooth-restoration interface. Materials with mechanical properties underposable to that of dentin or enamel improve the biomechanical behavior of the restored tooth reducing the areas of high stress concentration. SIGNIFICANCE: The use of endocrown restorations present the advantage of reducing the interfaces of the restorative system. The choice of the restorative materials should be carefully evaluated. Materials with mechanical properties similar to those of sound teeth improve the reliability of the restoartive system. SN - 0109-5641 UR - https://www.unboundmedicine.com/medline/citation/16406084/Evaluation_of_the_biomechanical_behavior_of_maxillary_central_incisors_restored_by_means_of_endocrowns_compared_to_a_natural_tooth:_a_3D_static_linear_finite_elements_analysis_ DB - PRIME DP - Unbound Medicine ER -