Journal ArticleDOI
Sol−Gel Glasses as Precursors of Bioactive Glass Ceramics
TLDR
In this paper, the influence of the composition and thermal treatment on the in vitro bioactivity of glasses and glass ceramics obtained by the sol−gel method, to obtain bioactive glass Ceramics in a simpler system than those at present.Abstract:
The aim of this work was to study the influence of the composition and thermal treatment on the in vitro bioactivity of glasses and glass ceramics obtained by the sol−gel method, to obtain bioactive glass ceramics in a simpler system than those at present. For this purpose, gels in the systems SiO2−CaO (70S: 70/30) and SiO2−CaO− P2O5 (55S: 55/41/4) were heated at temperatures ranging between 700 and 1400 °C. The samples were characterized by DTA/TG, XRD, FTIR, SEM, and EDS and an in vitro bioactivity study in SBF was carried out. The results showed that all materials obtained (glasses or glass ceramics) were bioactive. The bioactivity was influenced by the initial gel composition, by the thermal treatment, and by the different phases present in the glass ceramics. In glasses the bioactivity decreased with the stabilization temperature. In the glass ceramics the bioactivity was favored by the presence of pseudo-wollastonite (most soluble phase of CaSiO3) and of tricalcium phosphate.read more
Citations
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Journal ArticleDOI
Optimising bioactive glass scaffolds for bone tissue engineering.
TL;DR: 3D bioactive glass foam scaffolds sintered at 800 degrees C for 2 h fulfill the criteria for an ideal scaffold for tissue engineering applications and bioactivity is maintained.
Journal ArticleDOI
Structural study of sol–gel silicate glasses by IR and Raman spectroscopies
TL;DR: In this article, a study of the structure and bonding configuration of sol-gel silicate glasses by Raman and infrared spectroscopies is presented, and a review of the Raman lines and infrared bands assignment, the identification of the non-bridging silicon-oxygen groups and the ring structures are also demonstrated.
Journal ArticleDOI
Sol-gel silica-based biomaterials and bone tissue regeneration.
Daniel Arcos,María Vallet-Regí +1 more
TL;DR: This review collects the most important advances in the field of silica glasses occurring in the last decade, which are called to play a lead role in the future of bone regenerative therapies.
Journal ArticleDOI
Bioceramics: From Bone Regeneration to Cancer Nanomedicine
TL;DR: Research on biomaterials has been growing in the last few years due to the clinical needs in organs and tissues replacement and regeneration and in addition, cancer nanomedicine has recently appeared as an effective means to combine nanotechnology developments towards a clinical application.
Journal ArticleDOI
Biocompatible alginate/nano bioactive glass ceramic composite scaffolds for periodontal tissue regeneration.
Sowmya Srinivasan,R. Jayasree,Krishna Prasad Chennazhi,Shantikumar V. Nair,Rangasamy Jayakumar +4 more
TL;DR: Results suggest that these biocompatible composite scaffolds can be useful for periodontal tissue regeneration.
References
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Journal ArticleDOI
Solutions able to reproduce in vivo surface-structure changes in bioactive glass-ceramic A-W.
TL;DR: The results support the concept that the apatite phase on the surface of glass-ceramic A-W is formed by a chemical reaction of the glass- Aceramic with the Ca2+, HPO4(2-), and OH- ions in the body fluid.
Journal ArticleDOI
Bonding mechanisms at the interface of ceramic prosthetic materials
TL;DR: A theoretical model to explain the interfacial bonding is based upon in-vitro studies of glass-ceramic solubility in interfacial hydroxyapatite crystallization mechanisms, compared with in- vivo rat femur implant histology and ultrastructure results.
Journal ArticleDOI
Bioactive glass ceramics: properties and applications.
TL;DR: It was shown that some new kinds of bioactive materials can be developed from CaO,SiO2-based glasses and they were shown to be useful as thermoseeds for hyperthermia treatment of cancer.
Journal ArticleDOI
Ca, P‐rich layer formed on high‐strength bioactive glass‐ceramic A‐W
Tadashi Kokubo,Setsuro Ito,Z. T. Huang,Takeshi Hayashi,Sumio Sakka,Toshiaki Kitsugi,Takao Yamamuro +6 more
TL;DR: It is concluded that the essential condition for glass and glass-ceramic to bond to bone is the formation of the surface apatite layer in the body environment but it is not essential to contain apatites within the material.
Journal ArticleDOI
Ceramics for medical applications
TL;DR: An overview of the different types of ceramics available for medical applications, focused mainly on bioactive glasses, is presented in this paper, where a common characteristic of bioactive ceramic is a time-dependent, kinetic modification of the surface that occurs upon implantation.