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Analytical estimation of tooth strength, restored by direct or indirect restorations

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This work presents a stress-strain state analytical estimation of restored tooth hard tissues with consideration of their contact interactions with a monolithic filling or a dental onlay. | Analytical estimation of tooth strength restored by direct or indirect restorations Engineering Solid Mechanics 7 2019 193-204 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm Analytical estimation of tooth strength restored by direct or indirect restorations O. Bulbuka A. Velychkovychb V. Mazurenkoc L. Ropyakb and T. Pryhorovskab a Ivano-Frankivsk National Medical University Ukraine b Ivano-Frankivsk National Technical University of Oil and Gas Ukraine c Vasyl Stefanyk Precarpathian National University Ukraine A R T I C L EI N F O ABSTRACT Article history This work presents a stress-strain state analytical estimation of restored tooth hard tissues with Received 20 December 2018 consideration of their contact interactions with a monolithic filling or a dental onlay. The tooth Accepted 29 May 2019 with a defect is simulated as a continuous isotropic cylindrical body with a non-through hole and Available online the filling or onlay is simulated as an elastic deformable cylinder. The contact between the tooth 29 May 2019 Keywords and the fillings onlay is simulated as the ideal contact. The final strength estimation of the Contact interaction restored tooth is carried out according to the energy criterion. The authors suggest a linear index Stress-strain state of tooth damage for practical application of the obtained results. This index can be easily obtained Layered structure by direct measurement. The differential approach is developed to select a restoring method of the Restoration tooth with the defect to provide a reliable restoration of the anatomical crown of the tooth. Tooth Filling Onlay 2019 Growing Science Ltd. All rights reserved. 1. Introduction Thin-walled structures are widespread distributed in nature and widely used in engineering because these structures successfully combine low material consumption and required strength. However the thin-walled structure like any perfect product does not .