A novel ceramic material with medical application

Abstract

Until now the basic methods used in manufacturing of wollastonite have been chemical (melting together with glass crystallization process, chemical coprecipitation) and sol - gel methods. A new and promising way of wollastonite fabrication is controlled pyrolysis of polysiloxane precursors with inorganic fillers. Heat treatment of such mixtures leads to the formation of wollastonite-containing ceramics already at about 1000?C. This is a relatively inexpensive and efficient method which enables to obtain complex shapes of the samples. The aim of this work was to obtain sintered, wollastonite-containing bioceramics and determine its bioactive features. Samples were sintered at three different temperatures: 1000, 1100 and 1200?C. Then the bioactivity of the wollastonite-containing ceramics was investigated by the ?in vitro? test in simulated body fluid. On the basis of the achieved results, it can be assumed that the obtained material possesses bioactive features.

Towards the synthesis of an Mg-containing silicate glass–ceramic to be used as a scaffold for cementum/alveolar bone regeneration

“…Upon heat treatment at T 2 , the FTIR spectra presented the characteristic peaks of wollastonite (W, CaSiO 3 ), while after heating at T 3 the characteristic peaks of both wollastonite and pseudowollastonite (PsW, a-CaSiO 3 ) were detected [29][30][31]. The XRD patterns confirmed the FTIR findings by revealing the formation of wollastonite (ICDD card 84-0654) in the case of the sample heated at T 2 and the presence of both wollastonite and pseudowollastonite (ICDD card 74-0874) after heat treatment at T 3 .…”

Effect of CaO/SiO2 compositions on the structure formation of mesoporous calcium silicate (CaSiO3) composite particles as adsorbent for organic dye removal

“…The other name of wollastonite is calcium silicate (CaSiO3). Based on the mass calculation, CaSiO3 has a theoretical composition of 48 wt% of CaO and 52 wt% of SiO2, respectively [1,2]. CaSiO3 has many uses because it has several unique properties: low conductivity, small mass loss, and high hardness [3].…”