Can I read In vivo aging of zirconia dental ceramics – Part I: Biomedical grade 3Y-TZP on EtoBox?
In vivo aging of zirconia dental ceramics – Part I: Biomedical grade 3Y-TZP by Andraž Kocjan; Jasna Cotič; Tomaž Kosmač; Peter Jevnikar is a Dentistry article available to read on EtoBox.
What is In vivo aging of zirconia dental ceramics – Part I: Biomedical grade 3Y-TZP about?
## Objective: In vivo aging of biomedical grade 3y-tzp ceramics in the oral environment was assessed and compared to artificially accelerated in vitro hydrothermal aging extrapolations at 37°c. ## Methods: 88 discs were pressed and sintered (1450-1500°c) from two commercial 3y-tzp compositions containing 0.25% alo to generate finer- and coarser-grained specimens. as-sintered (as) and airborne-particle abraded (apa; 50μm alo) surfaces were investigated. in vivo aging was performed by incorporating specimens in lingual flanges of complete dentures of 12 edentulous volunteers who wore them continuously for up to 24 months. for comparison, in vitro hydrothermal aging at 134°c was also performed and analysed by xrd and (fib)-sem. data was statistically analysed with linear regression models. ## Results: Finer and coarser-grained specimens exhibited statistically insignificant differences in aging in vivo. the monoclinic fraction (x) on as surfaces abruptly increased to ∼8% after 6 months. the aging process then proceeded with slower linear kinetics (∼0.24%/month). after 24 months, x reached ∼12%. the calculated maximum transformed layer was 0.385μm representing one layer of transformed
Who reads In vivo aging of zirconia dental ceramics – Part I: Biomedical grade 3Y-TZP?
It is typically read by researchers, students, and practitioners in Dentistry.
- Author
- Andraž Kocjan; Jasna Cotič; Tomaž Kosmač; Peter Jevnikar
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0109-5641)
- Published
- 2020
- Language
- EN
- Field
- Dentistry (Health Sciences)