Effect of calcium hydroxide on mechanical strength and biological properties of bioactive glass

Shah, Asma Tufail; Batool, Madeeha; Chaudhry, Aqif Anwar; Iqbal, Farasat; Javaid, Ayesha; Zahid, Saba; Ilyas, Kanwal; Qasim, Syed Saad Bin; Khan, Ather Farooq; Khan, Abdul Samad; Rehman, Ihtesham Ur

doi:10.1016/j.jmbbm.2016.03.030

Cited by 35 publications

(34 citation statements)

References 30 publications

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“…The bands from 1300 to 900 cm −1 and 800 to 450 cm −1 , related to stretching and bending mode of Si-O-Si bonds [ 26 , 27 ], appeared wider and flattened, in the case of CEL2 green foam (compared to those of pure glass powders), as an effect of partial dissolution of the glass and formation of disordered hydrated gel.…”

Section: Resultsmentioning

confidence: 99%

Bioactive Glass-Ceramic Foam Scaffolds from ‘Inorganic Gel Casting’ and Sinter-Crystallization

et al. 2018

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Highly porous bioactive glass-ceramic scaffolds were effectively fabricated by an inorganic gel casting technique, based on alkali activation and gelification, followed by viscous flow sintering. Glass powders, already known to yield a bioactive sintered glass-ceramic (CEL2) were dispersed in an alkaline solution, with partial dissolution of glass powders. The obtained glass suspensions underwent progressive hardening, by curing at low temperature (40 °C), owing to the formation of a C–S–H (calcium silicate hydrate) gel. As successful direct foaming was achieved by vigorous mechanical stirring of gelified suspensions, comprising also a surfactant. The developed cellular structures were later heat-treated at 900–1000 °C, to form CEL2 glass-ceramic foams, featuring an abundant total porosity (from 60% to 80%) and well-interconnected macro- and micro-sized cells. The developed foams possessed a compressive strength from 2.5 to 5 MPa, which is in the range of human trabecular bone strength. Therefore, CEL2 glass-ceramics can be proposed for bone substitutions.

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Section: Resultsmentioning

confidence: 99%

Bioactive Glass-Ceramic Foam Scaffolds from ‘Inorganic Gel Casting’ and Sinter-Crystallization

et al. 2018

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“…In 1969, Larry Hench and his co-workers laid the foundation of bioactive ceramics by developing Hench's 45S5 Bioglass ® , which was found to be successfully bonded in a chemical manner to the hard tissues. There are different types of biocompatible BAG, for example, conventional Hench's Bioglass ® , as well as phosphatebased bioglass and borate-based bioglass which have been later introduced 166,167) . Sauro et al 107) investigated the therapeutic effects of Bioglass 45S5 and zincpolycarboxylated BAG-based dental composites on the bonded-dentin interface.…”

Section: Bag Based Dental Resinsmentioning

confidence: 99%

A review of bioceramics-based dental restorative materials

Khan

Syed

2019

Dent. Mater. J.

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Currently, much has been published related to conventional resin-based composites and adhesives; however, little information is available about bioceramics-based restorative materials. The aim was to structure this topic into its component parts and to highlight the translational research that has been conducted up to the present time. A literature search was done from indexed journals up to September 2017. The main search terms used were based on dental resin-based composites, dental adhesives along with bioactive glass and the calcium phosphate family. The results showed that in 123 articles, amorphous calcium phosphate (39.83%), hydroxyapatite (23.5%), bioactive glass (16.2%), dicalcium phosphate (5.69%), monocalcium phosphate monohydrate (3.25%), and tricalcium phosphate (2.43%) have been used in restorative materials. Moreover, seven studies were found related to a newly developed commercial bioactive composite. The utilization of bioactive materials for tooth restorations can promote remineralization and a durable seal of the tooth-material interface.

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“…A weaker band around 1650 cm −1 , assigned to deformation mode of O–H bond, also appears. In the as received state (lower plot in Figure 2), the broad band from 1290 to 900 cm −1 and the bands at 800 and 450 cm −1 could be ascribed to the stretching mode and with the rocking and bending of the Si–O–Si group, respectively [38,39,40]. In the alkali-activated state the same bands appear wider and flattened, likely due to the formation of more disordered bonding in the gel.…”

Section: Resultsmentioning

confidence: 99%

Bioactive Glass-Ceramic Scaffolds from Novel ‘Inorganic Gel Casting’ and Sinter-Crystallization

et al. 2017

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Highly porous wollastonite-diopside glass-ceramics have been successfully obtained by a new gel-casting technique. The gelation of an aqueous slurry of glass powders was not achieved according to the polymerization of an organic monomer, but as the result of alkali activation. The alkali activation of a Ca-Mg silicate glass (with a composition close to 50 mol % wollastonite—50 mol % diopside, with minor amounts of Na2O and P2O5) allowed for the obtainment of well-dispersed concentrated suspensions, undergoing progressive hardening by curing at low temperature (40 °C), owing to the formation of a C–S–H (calcium silicate hydrate) gel. An extensive direct foaming was achieved by vigorous mechanical stirring of partially gelified suspensions, comprising also a surfactant. The open-celled structure resulting from mechanical foaming could be ‘frozen’ by the subsequent sintering treatment, at 900–1000 °C, causing substantial crystallization. A total porosity exceeding 80%, comprising both well-interconnected macro-pores and micro-pores on cell walls, was accompanied by an excellent compressive strength, even above 5 MPa.

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Effect of calcium hydroxide on mechanical strength and biological properties of bioactive glass

Cited by 35 publications

References 30 publications

Bioactive Glass-Ceramic Foam Scaffolds from ‘Inorganic Gel Casting’ and Sinter-Crystallization

Bioactive Glass-Ceramic Foam Scaffolds from ‘Inorganic Gel Casting’ and Sinter-Crystallization

A review of bioceramics-based dental restorative materials

Bioactive Glass-Ceramic Scaffolds from Novel ‘Inorganic Gel Casting’ and Sinter-Crystallization

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