The glass-ceramic mainly containing fluorophlogopite is one of widely used dental ceramics. In the K2O-CaO-MgO-Al2O3-SiO2-F system, a new-type glass-ceramic containing fluorophlogopite Ca-mica has been synthesized. Its crystalline was studied by XRD and EDS. The fluorophlogopite whose formula postulated K(1 - X )Ca( X/2)Mg(3)AlSi(3)O(10)F(2) was its main crystalline. The microstructure of the glass-ceramic displayed typical machinable microstructure with lath like crystals isolated and interlocking with different aspect ratio. The material also showed better bending strength (228.11 +/- 7.55 MPa). It took less than 12 minutes to fabricate a whole crown by dental CAD/CAM system with the glass-ceramic.
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http://dx.doi.org/10.1007/s10856-006-0540-9 | DOI Listing |
In understanding the catalytic efficacy of silver (Ag) and gold (Au) nanoparticles (NPs) on glass-ceramic (GC) crystallization, the microstructure-machinability correlation of a SiO-MgO-AlO-BO-KO-MgF system is studied. The thermal parameters , glass transition temperature ( ) and crystallization temperature ( ) were extensively changed by varying NPs ( or ). Tc was found to be increased ( = 870-875 °C) by 90-110 °C when NPs were present in the glass system.
View Article and Find Full Text PDFDent Mater
March 2018
Materials Research Centre, Laboratory for Biomaterials, Indian Institute of Science, Bangalore, India. Electronic address:
Objective: The objective of the present study is to understand the role of yttria stabilized zirconia (YSZ) in achieving the desired spectrum of clinically relevant mechanical properties (hardness, elastic modulus, fracture toughness and brittleness index) and chemical solubility of mica glass ceramics.
Methods: The glass-zirconia mixtures with varying amounts of YSZ (0, 5, 10, 15 and 20wt.%) were ball milled, compacted and sintered to obtain pellets of glass ceramic-YSZ composites.
J Prosthet Dent
September 2015
Clinical Associate Professor, Oral Rehabilitation, The University of Hong Kong, Hong Kong, PR China. Electronic address:
Statement Of Problem: Fluorophlogopite glass ceramic (FGC) is a biocompatible, etchable, and millable ceramic with fluoride releasing property. However, its mechanical properties and reliability compared with other machinable ceramics remain undetermined.
Purpose: The purpose of this in vitro study was to compare the mechanical properties of 3 commercially available millable ceramic materials, IPS e.
J Mater Sci Mater Med
April 2010
Department of Materials and Metallurgical Engineering, Indian Institute of Technology Kanpur, Kanpur, India.
The aim of the present study was to examine the cellular functionality and antimicrobial properties of SiO(2)-MgO-Al(2)O(3)-K(2)O-B(2)O(3)-F glass ceramics (GC) containing fluorophlogopite as major crystalline phase. The cellular morphology and cell adhesion study using human osteoblast-like Saos-2 cells and mouse fibroblast L929 cells reveals good in vitro cytocompatibility of GC. The potential use of the GC for biomedical application was also assessed by in vitro synthesis of the alkaline phosphatase (ALP) activity of Saos-2 cells.
View Article and Find Full Text PDFJ Mater Sci Mater Med
November 2006
Department of Materials Science and Engineering, Jinan University, Guangzhou, 510632, China.
The glass-ceramic mainly containing fluorophlogopite is one of widely used dental ceramics. In the K2O-CaO-MgO-Al2O3-SiO2-F system, a new-type glass-ceramic containing fluorophlogopite Ca-mica has been synthesized. Its crystalline was studied by XRD and EDS.
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