Characterization of 3Y-TZP/TiO2 hybrid experimental dental ceramics |
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| Affiliation: | 1. Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil;2. Departamento de Biomateriais e Biologia Oral, Faculdade de Odontologia, Universidade de São Paulo, São Paulo, SP, Brazil;3. Instituto de Pesquisas Energéticas e Nucleares IPEN-CNEN, São Paulo, SP, Brazil;4. Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, Brazil;1. University of Belgrade, Institute for Multidisciplinary Research, Center of Excellence for Green Technologies, Kneza Višeslava 1, 11030, Belgrade, Serbia;2. Biosense Institute, Center for Sensing Technologies, University of Novi Sad, Dr Zorana Đinđića 1, 21102, Novi Sad, Serbia;1. College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300350, China;2. Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Tianjin, 300350, China;3. School of Physics, Nankai University, Tianjin, 300350, China;4. School of Opto-electronic Information, University of Electronic Science and Technology, Chengdu, 610054, China;5. Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, Nankai University, Tianjin, 300350, China;1. Functional Polymer Materials R&D and Engineering Application Technology Innovation Center of Hebei, Xingtai, Hebei, 050041, China;2. Xingtai Key Laboratory of Biomimetic and Catalytic Materials, Xingtai, Hebei, 050041, China;3. School of Physics and Electronic Engineering, Xingtai University, Xingtai, Hebei, 054001, China;4. Department of Materials Science and Engineering, Faculty of Engineering, Arak University, Arak, Iran;5. Research Institute of Advanced Technologies, Arak University, Arak, 38156–8-8349, Iran;1. Aix Marseille Université, Université de Toulon, CNRS, IM2NP, Marseille, CS 60584, Toulon, Cedex 9, F-83041, France;2. Université de Toulon, Aix Marseille Université, CNRS/INSU, IRD, MIO UM 110, CS 60584-83041, Toulon, CEDEX 9, France;1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China;2. School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong, 519082, China;3. State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China |
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| Abstract: | The addition of titania to zirconia dental implants has been considered a promising choice to improve its bioactivity. This study aimed to evaluate the effect of different sintering conditions on the microstructure, density, optical properties and flexural strength of a 3Y-TZP/TiO2 dental ceramic based on zirconia with two different titania contents (7.5 mol% and 12.5 mol%). 3Y-TZP/TiO2 ceramic powders were synthesized by coprecipitation, uniaxially pressed and sintered at six different sintering conditions. Microstructural analysis of the sintered samples was performed by scanning electron microscopy and X-ray diffraction. Optical properties were measured using a spectrophotometer. The density was determined by Archimedes principle. Flexural strength was estimated by the biaxial flexure device. The microstructure and flexural strength of the 3Y-TZP/TiO2 dental ceramic with 7.5% and 12.5 mol% were affected by the sintering conditions. Sintering the specimens at 1460 °C for 2 h increased the grain size and significantly decreased the flexural strength of 3Y-TZP/TiO2 dental ceramic. The interaction (titania content x sintering conditions) affected the relative density and optical properties. A relative density greater than 98% was achieved for the T7.5 groups (sintered at 1260 °C/1 h, 1300 °C/1 h and 1300 °C/2 h) and for the T12.5 groups (sintered at 1260 °C/1 h, 1260 °C/4 h, 1300 °C/1 h and 1300 °C/2 h). The highest values of L*, a* and b* were respectively 87.2 (T7.5 group sintered at 1460 °C/2hs), 4.3 (T12.5 group sintered at 1300 °C/2hs) and 15.8 (T12.5 group sintered at 1300 °C/1 h). The material developed with 12.5 mol% of titania and sintered at 1300 °C/2 h showed high densification, flexural strength of 670 MPa and has good potential to be used in dentistry. |
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| Keywords: | 3Y-TZP Titania Dental implants Sintering Flexural strength Optical properties |
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