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Stress concentration in all-ceramic posterior fixed partial dentures.
Quintessence Int. 1996 Oct; 27(10):701-6.QI

Abstract

Two-dimensional finite-element analysis was used to study levels and distribution patterns of stress within three-unit fixed partial dentures (mandibular first premolar to first molar) constructed of different materials (Type III gold alloy, Dicor, and In-Ceram) and with different connector heights (3.0 mm versus 4.0 mm). In the computer models, 10 MPa of stress was applied centrally to the prosthesis. Resultant von Mises stresses were concentrated within the connectors; the greatest stress occurred at the axial location of the connector. Stresses were 40% to 50% lower for 4.0-mm connectors. Patterns of stress distribution were similar for premolar and molar connectors. Stress levels within In-Ceram models were lower than for the other two materials and represented a lower percentage of the ultimate strength of the material. Based on a two-dimensional finite-element analysis model, In-Ceram would appear to be the best choice for posterior fixed partial dentures.

Authors+Show Affiliations

Kamposiora P
Department of Prosthodontics, University of North Carolina at Chapel Hill, USA.
Papavasiliou G
No affiliation info available
Bayne SC
No affiliation info available
Felton DA
No affiliation info available

MeSH

Aluminum OxideBicuspidBite ForceComputer SimulationDental PorcelainDental Stress AnalysisDenture DesignDenture, Partial, FixedGold AlloysMandibleMaterials TestingModels, Theoretical

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

9180408

Citation

Kamposiora, P, et al. "Stress Concentration in All-ceramic Posterior Fixed Partial Dentures." Quintessence International (Berlin, Germany : 1985), vol. 27, no. 10, 1996, pp. 701-6.
Kamposiora P, Papavasiliou G, Bayne SC, et al. Stress concentration in all-ceramic posterior fixed partial dentures. Quintessence Int. 1996;27(10):701-6.
Kamposiora, P., Papavasiliou, G., Bayne, S. C., & Felton, D. A. (1996). Stress concentration in all-ceramic posterior fixed partial dentures. Quintessence International (Berlin, Germany : 1985), 27(10), 701-6.
Kamposiora P, et al. Stress Concentration in All-ceramic Posterior Fixed Partial Dentures. Quintessence Int. 1996;27(10):701-6. PubMed PMID: 9180408.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Stress concentration in all-ceramic posterior fixed partial dentures. AU - Kamposiora,P, AU - Papavasiliou,G, AU - Bayne,S C, AU - Felton,D A, PY - 1996/10/1/pubmed PY - 1996/10/1/medline PY - 1996/10/1/entrez SP - 701 EP - 6 JF - Quintessence international (Berlin, Germany : 1985) JO - Quintessence Int VL - 27 IS - 10 N2 - Two-dimensional finite-element analysis was used to study levels and distribution patterns of stress within three-unit fixed partial dentures (mandibular first premolar to first molar) constructed of different materials (Type III gold alloy, Dicor, and In-Ceram) and with different connector heights (3.0 mm versus 4.0 mm). In the computer models, 10 MPa of stress was applied centrally to the prosthesis. Resultant von Mises stresses were concentrated within the connectors; the greatest stress occurred at the axial location of the connector. Stresses were 40% to 50% lower for 4.0-mm connectors. Patterns of stress distribution were similar for premolar and molar connectors. Stress levels within In-Ceram models were lower than for the other two materials and represented a lower percentage of the ultimate strength of the material. Based on a two-dimensional finite-element analysis model, In-Ceram would appear to be the best choice for posterior fixed partial dentures. SN - 0033-6572 UR - https://www.unboundmedicine.com/medline/citation/9180408/Stress_concentration_in_all_ceramic_posterior_fixed_partial_dentures_ DB - PRIME DP - Unbound Medicine ER -