Georges El Najjar^1,3*, Halal R², Daou M³ and Zebouni E¹

¹Department of Fixed Prosthetics, Saint-Joseph University, Lebanon
²Private Practice, Lebanon
³Department of Pediatric Dentistry, Saint-Joseph University, Lebanon

*Corresponding Author: Georges El Najjar, Research Assistant, Department of Fixed Prosthetics, Saint-Joseph University, Lebanon.

Received: July 17, 2021s; Published: August 24, 2021

Abstract

Objective of this Study: To study the variation of flexural strength as a function of time during an interval simulating a time span of a year in the mouth and determine whether the mechanical performance of the materials in question remains acceptable.

Materials and Methods: Three types of materials are used: bis-acrylic resin (Tempsmart^® and Cooltemp^®), conventional PMMA (Unifast III^®) and composite resin (Revoteck LC^®). The flexural strength is evaluated. The samples undergo thermal cycling up to 10 000 cycles and are evaluated at different points in time.

Results: The bis-acrylic and conventional PMMA showed acceptable results throughout this study. The bis-acrylic material Tempsmart^® showed the best values. The composite material Revoteck LC^® has shown to be inadequate.

Conclusion: Among the tested materials, Tempsmart^® is the most suited for long-term temporary restorations.

Keywords: Flexural Strength; Temporary Restoration; Bis-Acrylic Resin; Composite Resin; Conventional PMMA

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Citation

Citation: Georges El Najjar., et al. “In Vitro Evaluation of the Flexural Strength of Different Temporary Crown Materials, After Thermocycling”. Acta Scientific Dental Sciences 5.9 (2021): 121-134.

Copyright

Copyright: © 2021 Georges El Najjar., 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.