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Journals / Meandros Medical And Dental Journal / 2023 / Volume: 24 Issue: 4

Flexural Strength of Monolithic Zirconia After Zirconia-specific GrindingProcedures and Hydrothermal Aging

Hüseyin Şeker(ADNAN MENDERES UNIVERSITY)
Şeyma Kurtuluş(AYDIN ADNAN MENDERES UNIVERSITY)
Yener Okutan(AYDIN ADNAN MENDERES UNIVERSITY)
Münir Tolga Yücel(SELCUK UNIVERSITY)
Pages
—
Publication Date
2023-12-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Zirconia-specific fine diamond burs are recommended to maintain the mechanical strength of zirconia when clinical adjustments are needed.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: To evaluate the effect of grinding with different diamond burs on the surface roughness (Ra) and flexural strength(FS) of hydrothermally aged zirconia.
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Key Findings & Data:Materials and Methods: Ninety-eight bar-shaped monolithic zirconia specimens were prepared and divided into 7 subgroupsaccording to grinding procedures: control, grinding with diamond burs (F; fine, M; medium, C; coarse); and grinding with zirconiaspecific diamond burs (ZF; fine, ZM; medium, ZC; coarse).
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Conclusion & Impact:Conclusion: Zirconia-specific fine diamond burs are recommended to maintain the mechanical strength of zirconia when clinical adjustments are needed.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Flexural strength · grinding · monolithic zirconia

Abstract

Objective: To evaluate the effect of grinding with different diamond burs on the surface roughness (Ra) and flexural strength(FS) of hydrothermally aged zirconia. Materials and Methods: Ninety-eight bar-shaped monolithic zirconia specimens were prepared and divided into 7 subgroupsaccording to grinding procedures: control, grinding with diamond burs (F; fine, M; medium, C; coarse); and grinding with zirconiaspecific diamond burs (ZF; fine, ZM; medium, ZC; coarse). All ground specimens were polished using a two-step zirconia polishingsystem. All specimens were subjected to autoclave aging. Ra was measured using a profilometer. One specimen per groupwasexamined by scanning electron microscopy and X-ray diffractometry. A 3-point FS test was performed using a universal testingmachine. Results: The lowest and highest Ra values were obtained in the control and C groups, respectively. The ZC group showed higher Ravalues than the ZF and ZM groups. There was no difference between the FS values of the ZF and control groups. However, othergrinding procedures led to decreased FS. Conclusion: Zirconia-specific fine diamond burs are recommended to maintain the mechanical strength of zirconia when clinical adjustments are needed.

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Cite This Article

Şeker, H., Kurtuluş, Ş., Okutan, Y., Yücel, M. T. (2023). Flexural Strength of Monolithic Zirconia After Zirconia-specific GrindingProcedures and Hydrothermal Aging. Meandros Medical And Dental Journal, Volume: 24 Issue: 4. https://doi.org/10.4274/meandros.galenos.2023.59219

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