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Omaish HHM, Abdelhamid AM, Neena AF. Comparison of the strain developed around implants with angled abutments with two reinforced polymeric CAD-CAM superstructure materials: An in vitro comparative study. J Prosthet Dent 2022; 127:634.e1-634.e8. [DOI: 10.1016/j.prosdent.2022.01.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 10/19/2022]
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Hesham M, Hashem A, Hamza F. Effect of Different Surface Treatments of Glass Fiber Posts on their Surface Roughness and Flexure Properties. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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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Affiliation(s)
- Samuel Lowe
- Victrex, Hillhouse International Victrex Technology Centre Thornton‐Cleveleys UK
| | - Oana Ghita
- Centre for Additive Layer Manufacturing (CALM), College of Engineering, Mathematics and Physical Sciences, North Park Road University of Exeter Exeter UK
| | - John G Hardy
- Department of Chemistry Lancaster University Lancaster UK
- Materials Science Institute Lancaster University Lancaster UK
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