Microstructural analyses of artificial ageing in 5 commercially and non-commercially available Zirconia dental implants. Issue 10 (August 2020)

• Record Type: Journal Article
• Authors: Monzavi, Mona; Zhang, Fei; Douillard, Thierry; Gremillard, Laurent; Noumbissi, Sammy; Nowzari, Hessam; Chevalier, Jerome
• Is Part Of: Journal of the European Ceramic Society. Volume 40:Issue 10(2020)
• Page Start: 3642
• Page End: 3655
• Publication Date: 2020-08
• Subjects: Zirconia dental implant -- Artificial ageing -- Low temperature degradation -- FIB-SEM -- X-ray diffraction (XRD); Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2020.03.050
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Objectives: The present in vitro study evaluated the effect of LTD (Low Temperature Degradation) on microstructural properties, phase transformation and micro-crack formation of 5 commercially and non-commercially available Zirconia dental implant systems. Methods: Accelerated ageing at 134 °C and 2 bar pressure for 30 h was completed. Focused Ion Beam-Scanning Electron Microscopy (FIB/SEM), X-ray diffraction (XRD) and cathodoluminescence quantified phase transformation and micro-crack formation. Results: Transformation of the tetragonal grains towards the monoclinic symmetry was observed in all systems. The highest depth was measured in non-commercial TAV dental with the largest grain size (8.7 μm). A micro-cracked layer was associated with the transformation zone. The ageing-related micro-crack formation was parallel to the surface for all groups and was deepest for the non-commercial TAV dental with the largest grain size (7.4 μm). Conclusion: LTD following in vitro ageing using an autoclave was minimal for all implant systems investigated.