Effect of Different Surface Treatments of Glass Fiber Posts on their  Surface Roughness and Flexure Properties

Mai Hesham; Ahmed Hashem; Faisal Hamza

doi:10.3889/oamjms.2021.6843

Authors

Mai Hesham Department of Dental Biomaterials, Faculty of Dentistry, October University for Modern Sciences and Arts, 6th of October City, Egypt https://orcid.org/0000-0001-7422-8524
Ahmed Hashem Department of Fixed Prosthodontics, Faculty of Dentistry, October University for Modern Sciences and Arts, 6th of October City, Egypt
Faisal Hamza Department of Dental Biomaterials https://orcid.org/0000-0002-4048-7541

DOI:

https://doi.org/10.3889/oamjms.2021.6843

Keywords:

Glass fiber post, Sandblasting, Hydrofluoric acid, Er: YAG

Abstract

AIM: This study aimed to assess the effect of different surface treatments on the surface roughness and flexure properties of glass fiber posts “GFPs.”

MATERIALS AND METHODS: A total of 40 GFPs were divided into four groups (n = 10): GC – no surface treatment (control), GSB – sandblasted, GHF – hydrofluoric acid etched, and GL – Er: YAG laser irradiated. Surface roughness was detected using surface profilometer and the 3-points bending flexural test measured flexural strength and elastic modulus.

RESULTS: GSB showed the highest mean roughness followed by GHF, then GL, while GC had lowest roughness mean value. The 3 points bending test results were calculated and recorded, GSB exhibited the highest flexure stress (MPa) compared to GHF and GL. Modulus of elasticity (GPa) showed significant differences between the tested groups, GSB showed the highest modulus of elasticity compared to GHF and GL, while GC showed insignificant differences with all tested groups.

CONCLUSION: Different surface treatments postulated in this study showed alternations of GFPs surfaces without jeopardizing the mechanical properties of GFPs.

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