نتایج جستجو برای: phosphate glass ceramics

تعداد نتایج: 187894  

2017
Amanda De Castro Juraski Andrea Cecilia Dorion Rodas Hamada Elsayed Enrico Bernardo Viviane Oliveira Soares Juliana Daguano

Ca-Mg silicates are receiving a growing interest in the field of bioceramics. In a previous study, wollastonite-diopside (WD) glass-ceramics were successfully prepared by a new processing route, consisting of the heat treatment of a silicone resin embedding reactive oxide particles and a Ca/Mg-rich glass. The in vitro degradation, bioactivity, and cell response of these new WD glass-ceramics, f...

Journal: :Bone 2014
John Choy Christoph E Albers Klaus A Siebenrock Silvia Dolder Wilhelm Hofstetter Frank M Klenke

β-Tricalcium phosphate (β-TCP) ceramics are approved for the repair of osseous defects. In large defects, however, the substitution of the material by authentic bone is inadequate to provide sufficient long-term mechanical stability. We aimed to develop composites of β-TCP ceramics and receptor activator of nuclear factor κ-B ligand (RANKL) to enhance the formation of osteoclasts and promote ce...

2016
Wei Zheng Gang Liu Cheng Yan Yin Xiao Xigeng Miao

Calcium phosphate ceramic scaffolds have been widely investigated for bone tissue engineering due to their excellent biocompatibility and biodegradation. Unfortunately, they have the shortcoming of low mechanical properties. In order to provide strong, bioactive, and biodegradable scaffolds, a new approach of infiltrating the macro-tube ABS (acrylontrile butadiene styrene) templates with a hydr...

2017
Jacek Zmojda Marcin Kochanowicz Piotr Miluski Agata Baranowska Wojciech A Pisarski Joanna Pisarska Renata Jadach Maciej Sitarz Dominik Dorosz

Technology of active glass-ceramics (GC) is an important part of luminescent materials engineering. The classic method to obtain GC is based on annealing of parent glass in proper temperature and different time periods. Generally, only the bulk materials are investigated as a starting host for further applications. However, the effect of an additional heat-treatment process on emission and stru...

2012
Ploypailin Yongsiri Sukum Eitssayeam Gobwut Rujijanagul Somnuk Sirisoonthorn Tawee Tunkasiri Kamonpan Pengpat

The incorporation method was employed to produce potassium sodium niobate [KNN] (K0.5Na0.5NbO3) glass ceramics from the KNN-SiO2 system. This incorporation method combines a simple mixed-oxide technique for producing KNN powder and a conventional melt-quenching technique to form the resulting glass. KNN was calcined at 800°C and subsequently mixed with SiO2 in the KNN:SiO2 ratio of 75:25 (mol%)...

2016
Markus Rampf Marc Dittmer Christian Ritzberger Wolfram Höland

In the mid-twentieth century, Dr. Donald Stookey identified the importance and usability of nucleating agents and mechanisms for the development of glass-ceramic materials. Today, a number of various internal and surface mechanisms as well as combinations thereof have been established in the production of glass-ceramic materials. In order to create new innovative material properties, the presen...

Journal: :journal of dentistry, tehran university of medical sciences 0
farzin heravi dental materials research center, professor of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. maryam omidkhoda oral & maxillofacial diseases research center, associate professor of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. niloufar koohestanian general dentist and research scholar, division of biomedical engineering, brigham and woman's hospital, harvard medical school, boston, usa. tabassom hooshmand associate professor, department of dental biomaterials, school of dentistry, tehran university of medical sciences, tehran, iran. hossein bagheri assistant professor of dental biomaterials, dental materials research center, department of operative dentistry, faculty of dentistry, mashhad university of medical sciences, mashhad, iran. negin ghaffari dental student, university of toronto, faculty of dentistry. toronto, canada.

objectives: the aim of this study was to evaluate and compare the retentive strength of orthodontic bands cemented with amorphous calcium phosphate (acp)-containing and conventional glass ionomer cements (gics). materials and methods: one-hundred-and-twenty mandibular third molars were embedded in acrylic resin blocks with the buccal surface of crowns perpendicular to the base of the mold. the ...

The Chalcogenide glasses were fabricated by melting and quenching techniques in the Se-Ge system at the presence of 1mol% Ga and 3, 5, and 7mol% Sn. Differential Scanning Calorimetry (DSC) analysis was conducted to extract the heat treatment of the samples. Fourier Transform Infrared (FTIR) spectroscopy analysis was also performed in a range of 2-16µm. The Glass samples were heat-treated at 450...

2016
C. Knabe A. Houshmand Paul Ducheyne M. Stiller G. Berger P. Ducheyne R. Gildenhaar I. Kranz

Ideally, bioactive ceramics for use in alveolar ridge augmentation should possess the ability to activate bone formation and, thus, cause the differentiation of osteoprogenitor cells into osteoblasts at their surfaces. Therefore, in order to evaluate the osteogenic potential of novel bone substitute materials, it is important to examine their effect on osteoblastic differentiation. This study e...

Journal: :Journal of biomedical materials research. Part A 2008
C Knabe A Houshmand G Berger P Ducheyne R Gildenhaar I Kranz M Stiller

Ideally, bioactive ceramics for use in alveolar ridge augmentation should possess the ability to activate bone formation and, thus, cause the differentiation of osteoprogenitor cells into osteoblasts at their surfaces. Therefore, in order to evaluate the osteogenic potential of novel bone substitute materials, it is important to examine their effect on osteoblastic differentiation. This study e...

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