Low-Level Monoclinic Content Detection in Zirconia Implants Using Raman Spectroscopy

Vega, Marienette Morales; Bonifacio, Alois; Lughi, Vanni; Sergo, Valter

doi:10.1007/978-94-017-9133-5_59

NATO Science for Peace and Security Series B: Physics and Biophysics

2014

DOI: 10.1007/978-94-017-9133-5_59

|View full text |Cite

Low-Level Monoclinic Content Detection in Zirconia Implants Using Raman Spectroscopy

Marienette Morales Vega

Alois Bonifacio

Vanni Lughi

et al.

Abstract: Very low levels of monoclinic content in zirconia have been determined coupling Raman spectroscopy and principal component analysis.The method can be useful for the characterization of biomaterials based on zirconia

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2021

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is not clear whether the integrated or the absolute intensity of Raman peaks should be used in Equation (1). With Equation (1) being an intensity ratio, this question may seem unimportant; however, the absolute intensity might not fully represent the monoclinic content, especially by low V m values [29].…”

mentioning

confidence: 99%

Is Surface Metastability of Today’s Ceramic Bearings a Clinical Issue?

et al. 2021

View full text Add to dashboard Cite

Recent studies on zirconia-toughened alumina (ZTA) evidenced that in vivo aged implants display a much higher monoclinic zirconia content than expected from in vitro simulations by autoclaving. At the moment, there is no agreement on the source of this discrepancy: Some research groups ascribe it to the effect of mechanical impact shocks, which are generally not implemented in standard in vitro aging or hip walking simulators. Others invoke the effect of metal transfer, which should trigger an autocatalytic reaction in the body fluid environment, accelerating the kinetics of tetragonal-to-monoclinic transformation in vivo. Extrapolations of the aging kinetics from high (autoclave) to in vivo temperature are also often disputed. Last, Raman spectroscopy is by far the preferred method to quantify the amount of monoclinically transformed zirconia. There are, however, many sources of errors that may negatively affect Raman results, meaning that the final interpretation might be flawed. In this work, we applied Raman spectroscopy to determine the monoclinic content in as-received and in vitro aged ZTA hip joint implants, and in one long-term retrieval study. We calculated the monoclinic content with the most used equations in the literature and compared it with the results of X-ray diffraction obtained on a similar probe depth. Our results show, contrary to many previous studies, that the long-term surface stability of ZTA ceramics is preserved. This suggests that the Raman technique does not offer consistent and unique results for the analysis of surface degradation. Moreover, we discuss here that tetragonal-to-monoclinic transformation is also necessary to limit contact damage and wear stripe extension. Thus, the surface metastability of zirconia-containing ceramics may be a non-issue.

show abstract

mentioning

confidence: 99%

Is Surface Metastability of Today’s Ceramic Bearings a Clinical Issue?

et al. 2021

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Low-Level Monoclinic Content Detection in Zirconia Implants Using Raman Spectroscopy

Abstract: Very low levels of monoclinic content in zirconia have been determined coupling Raman spectroscopy and principal component analysis.The method can be useful for the characterization of biomaterials based on zirconia

Cited by 1 publication

References 0 publications

Is Surface Metastability of Today’s Ceramic Bearings a Clinical Issue?

Is Surface Metastability of Today’s Ceramic Bearings a Clinical Issue?

Contact Info

Product

Resources

About