Email this article Effect of high-speed sintering modes of Russian zirconia samples made of Ziceram T on strength indicators and color
- Authors: Sakhabieva D.A.1, Deev M.S.1, Dyakonenko E.E.2, Poyurovskaya I.Y.2, Rusanov F.S.2, Lebedenko I.Y.1,2
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Affiliations:
- RUDN university
- Central Research Institute of Dentistry and Maxillofacial Surgery
- Issue: Vol 26, No 2 (2022)
- Pages: 95-102
- Section: Experimental and Theoretical Investigation
- URL: https://journals.rcsi.science/1728-2802/article/view/101409
- DOI: https://doi.org/10.17816/1728-2802-2022-26-2-95-102
- ID: 101409
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Abstract
BACKGROUND: In recent years, zirconia prostheses have gradually become a mass type of orthopedic treatment. The production of zirconium dioxide blanks for dentistry has also been launched in our country. In recent years, the possibility of speed sintering of dental prostheses made of zirconia has been widely calculated, which makes it possible to reduce the process of manufacturing structures by four to five times.
AIM: To investigate the effect of high-speed sintering on important properties, such as strength characteristics during three-point bending and color parameters at 10 different modes of speed sintering of ceramic materials.
MATERIALS AND METHODS: The work uses samples obtained by computer-aided design and computer-aided manufacturing milling from domestic Ziceram T blanks, color A2. Depending on the firing modes, the samples were divided into 11 groups. The strength of the sintered samples was studied with three-point bending on a bursting machine. The color parameters of the samples were determined on the Spectron-M color analyzer in the CIE L*a*b system on a white and black background using acceptable norms of color difference and characteristics of color shades.
RESULTS: According to the results of tests for resistance to bending, susceptibility has an approximate value of more than 300 MPa. According to ISO 6872, this flexural strength is sufficient for the fabrication чof single crowns in both anterior and posterior teeth. An increase in the lightness of ceramic samples based on zirconium dioxide from domestic factories “Ziceram T” of Zircon Ceramics was established. The reduced firing time led to an increase in body weight, which is associated with a decrease in their intensity.
CONCLUSION: Express firing modes of ceramics based on zirconium dioxide Ziceram T guarantee the achievement of the required strength. However, none of the studied firing modes allowed achieving the color parameters of the control samples.
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##article.viewOnOriginalSite##About the authors
Djamilia A. Sakhabieva
RUDN university
Author for correspondence.
Email: djamilundel@ya.ru
ORCID iD: 0000-0003-1885-4269
Scopus Author ID: 57219431970
Russian Federation, Moscow
Mikhail S. Deev
RUDN university
Email: deevms@mail.ru
ORCID iD: 0000-0002-1851-2982
MD, Cand. Sci. (Med.), Associate Professor
Russian Federation, MoscowElena E. Dyakonenko
Central Research Institute of Dentistry and Maxillofacial Surgery
Email: dikonen@mail.ru
ORCID iD: 0000-0002-8318-9966
Russian Federation, Moscow
Irina Ya. Poyurovskaya
Central Research Institute of Dentistry and Maxillofacial Surgery
Email: ipourov@yandex.ru
ORCID iD: 0000-0001-7108-3753
Russian Federation, Moscow
Fedor S. Rusanov
Central Research Institute of Dentistry and Maxillofacial Surgery
Email: fedor@yandex.ru
ORCID iD: 0000-0001-5280-0294
MD, Cand. Sci. (Med.)
Russian Federation, MoscowIgor Yu. Lebedenko
RUDN university; Central Research Institute of Dentistry and Maxillofacial Surgery
Email: lebedenkoi@mail.ru
ORCID iD: 0000-0002-4050-484X
MD, Dr. Sci. (Med.), Professor
Russian Federation, Moscow; MoscowReferences
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