Modeling the rheological properties of four commercially available composite core build-up materials

Author:

Šarčev Ivan1,Šarčev Branislava Petronijević1,Krstonošić Veljko2,Janev Marko3,Atanacković Teodor M4ORCID

Affiliation:

1. Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia

2. Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia

3. Mathematical Institute of Serbian Academy of Arts and Sciences, Belgrade, Belgrade, Serbia

4. Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia

Abstract

The aim of this study is to analyze viscoelastic properties of direct composite core (Lightcore, Build-it, Clearfil Photo Core, Rebilda). Experiments are preformed and mathematical models developed, based on derivatives of fractional order, to describe the viscoelastic properties of the studied materials. The basic assumption that materials are of memory type was proved to be correct. For each material, four fractional derivative models are used to fit experimental data and then one model, with smallest error between measured and calculated data for storage and loss modulus, is chosen. On the basis of mathematical model formulated here, it is possible to predict some viscoelastic properties of the materials that are important in clinical application. Central conclusion is that the four studied materials have different rheological properties although they are indicated for the same clinical procedure.

Funder

Serbian Ministry of Education, Science and Technological Development

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Ceramics and Composites

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