Pradeep C Dathan¹, K Chandrasekharan Nair²*, Aswathy S Kumar³ and Lekshmy AR³

¹Professor and Head of the Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India
²Professor Emeritus, Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India
³Postgraduate Student, Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India

*Corresponding Author: K Chandrasekharan Nair, Professor Emeritus, Department of Prosthodontics, Sri Sankara Dental College, Akathumuri, Thiruvananthapuram, Kerala, India.

Received: June 12, 2023; Published: June 28, 2023

Abstract

Numerous dental materials are used in dentistry and in selecting the appropriate one, their mechanical properties are to be evaluated. Mechanical properties are governed by the laws of mechanics which would give us information on what happens when the material is subjected to forces. Restorative materials are expected to withstand forces during the fabrication process and during masticatory function. Materials can be described qualitatively like hard or soft, tough or fragile, flexible or stiff. But these descriptions will not help us in comparing and selecting a suitable material.
In dentistry, testing protocols are defined by different agencies like standard organisations and they have formulated specifications which would be updated from time to time. Strength testing is an important category in which the following properties are included: tensile strength, compressive strength, shear strength, yield strength fracture toughness, flexural strength and many more tests. Dentist is interested to know how the material selected for a restoration will behave in the course time. The restoration should be structurally durable without undergoing permanent deformation or fracture. Test for flexural strength has great predictive value. This overview briefly goes through the definition, numerous testing methods and flexure strength values of commonly used dental materials.

Keywords:Mechanical Properties; Flexural Strength; 3point Bend Test; Biaxial Flexure Strength; Flexural Modulus

References

1. Michael Raj Marks., et al. “Characterization Methods for Ultrathin Wafer and Die Quality: A Review”. IEEE Transactions on Components, Packaging, and Manufacturing Technology12 (2014): 2042-2057.
2. https://www.instron.com/en/products/testing-systems/universal-testing-systems
3. https://www.instron.com/en-in/resources/test-types/flexural-testing
4. https://www.sciencedirect.com/topics/materials-science/flexural-testing
5. https://sciencing.com/calculate-flexural-strength-5179141.html
6. Daisuke Miura., et al. “Reliability of Different Bending Test Methods for Dental Press Ceramics”. Materials 13 (2020): 5162.
7. Roger Morrell. “Biaxial Flexural Strength Testing of Ceramic Materials”. Measurement Good Practice Guide No. 12, Centre for Materials Measurement and Technology, National Physical Laboratory, UK) (1998).
8. Nourah Shono., et al. “Ball-on-three-balls biaxial flexural strength of bonded and unbonded CAD/CAM materials”. Ceramics-Silikáty1 (2022): 66-77.
9. Elraggal A., et al. “Effect of surface treatments on biaxial flexural strength, fatigue resistance, and fracture toughness of high versus low translucency zirconia”. BMC Oral Health 22 (2022): 412.
10. Andrea Scribante., et al. “Flexural Properties and Elastic Modulus of Different Esthetic Restorative Materials: Evaluation after Exposure to Acidic Drink”. Hindawi BioMed Research International 5109481 (2019): 8.
11. Abuelenain DA., et al. “Surface and Mechanical Properties of Different Dental Composites”. Austin Journal of Dentistry 2 (2015): 1019.

Citation

Citation: Pradeep C Dathan., et al. “Flexural Strength is a Critical Property of Dental Materials-An Overview".Acta Scientific Dental Sciences 7.7 (2023): 99-103.

Copyright

Copyright: © 2023 K Chandrasekharan Nair., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.