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Open AccessArticle

Metal Posts and the Effect of Material–Shape Combination on the Mechanical Behavior of Endodontically Treated Anterior Teeth

1
Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, V.le J.F. Kennedy 54-Mostra d’Oltremare Pad. 20, 80125 Naples, Italy
2
Department of Industrial Engineering, Fraunhofer JL IDEAS, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
3
Department of Industrial Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
4
School of Dentistry, University of Naples Federico II, via S. Pansini 5, 80131 Naples, Italy
*
Authors to whom correspondence should be addressed.
Metals 2019, 9(2), 125; https://doi.org/10.3390/met9020125
Received: 16 December 2018 / Revised: 14 January 2019 / Accepted: 22 January 2019 / Published: 24 January 2019
(This article belongs to the Special Issue Processing-Structure-Property Relationships in Metals)
The control of the process–structure–property relationship of a material plays an important role in the design of biomedical metal devices featuring desired properties. In the field of endodontics, several post-core systems have been considered, which include a wide range of industrially developed posts. Endodontists generally use posts characterized by different materials, sizes, and shapes. Computer-aided design (CAD) and finite element (FE) analysis were taken into account to provide further insight into the effect of the material–shape combination of metal posts on the mechanical behavior of endodontically treated anterior teeth. In particular, theoretical designs of metal posts with two different shapes (conical-tapered and conical-cylindrical) and consisting of materials with Young’s moduli of 110 GPa and 200 GPa were proposed. A load of 100 N was applied on the palatal surface of the crown at 45° to the longitudinal axis of the tooth. Linear static analyses were performed with a non-failure condition. The results suggested the possibility to tailor the stress distribution along the metal posts and at the interface between the post and the surrounding structures, benefiting from an appropriate combination of a CAD-based approach and material selection. The obtained results could help to design metal posts that minimize stress concentrations. View Full-Text
Keywords: dental materials; metal posts; computer-aided design (CAD); image analysis; mechanical properties; finite element analysis dental materials; metal posts; computer-aided design (CAD); image analysis; mechanical properties; finite element analysis
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MDPI and ACS Style

Gloria, A.; Maietta, S.; Richetta, M.; Ausiello, P.; Martorelli, M. Metal Posts and the Effect of Material–Shape Combination on the Mechanical Behavior of Endodontically Treated Anterior Teeth. Metals 2019, 9, 125.

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