Microstructure of lucite glass-ceramics for dental use

Musić, Svetozar; Živko-Babić, Jasenka; Mehulić, Ketij; Ristić, Mira; Popović, Stanko; Furić, Krešimir

doi:10.1016/0167-577x(95)00280-4

Cited by 9 publications

(4 citation statements)

References 12 publications

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“…Glass-ceramic L40Bg60 showed similar bands to those described for L30Bg70, apart from two shoulders at 412 and 642 cm -1 [17] , which were attributed to the presence of leucite. A similar behavior was observed in the L50Bg50 glass-ceramic, in which the band at 720 cm -1 was intensified and the shoulder at 642 cm -1 was even more marked, which corresponds to a higher relative content of leucite.…”

Section: Ftirmentioning

confidence: 53%

“…At the same time, two shoulders could be seen at 542 and 642 cm -1 , corresponding to vibrational bands of leucite 17 , which were previously overlapped with the bands of sodium calcium silicate. New bands appeared at 562 and 602 cm 1 corresponding to PO bendings vibrations 20 , two shoulders at 960 cm -1 [21] and 1120 cm -1 [2] related to PO vibrational modes, and an intense band at 1030 cm -1 , related to different vibrational modes of PO 4 -3 [9] , all attributed to the formation of crystalline hydroxyapatite 5 .…”

Section: Ftirmentioning

confidence: 71%

“…The presence of leucite was evident by the appearance of the band located at 720 cm -1 [17] , and a broadband at 500-560 cm -1 which coincides also with the contribution of PO bending vibrations of silicorhenanite 18 . The band at 577 cm -1 corresponds to a crystalline PO bending vibrational mode, which can be also attributed to silicorhenanite 18,19 .…”

Section: Ftirmentioning

confidence: 94%

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Bioactivity of leucite containing glass - ceramics using natural raw materials

Stábile

Volzone

2014

Mat. Res.

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Glass compositions were carefully prepared, using natural quartz and potassium feldspar as a part of the starting raw materials. The solids were prepared so as to have theoretical stoichiometric leucite and 45S5 Bioglass in different L/Bg weight ratios between 0.43-1.00. Novel bioactive glass-ceramics, containing leucite, sodium calcium silicate and silicorhenanite, confirmed by XRD and FTIR, were obtained. Bioactivity tests were carried out on powdered and sintered disks forms. The immersion time was up to 25 days. Apatite formation on powders was studied by FTIR, and XRD and SEM were used to study bioactivity on disks. The materials developed an apatite layer on their surfaces within 6 days of immersion in simulated body fluid. The glass-ceramic with L/Bg ratio= 0.43 presented an apatite layer on all its surface, not so for the samples with 0.66 and 1.00 ratios, on which such layer was peeled off in most part of their surfaces.

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Section: Ftirmentioning

confidence: 53%

Section: Ftirmentioning

confidence: 71%

Section: Ftirmentioning

confidence: 94%

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Bioactivity of leucite containing glass - ceramics using natural raw materials

Stábile

Volzone

2014

Mat. Res.

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“…The main component of the samples is SiO 2 oxide; thus, the previously reported vibrational studies of silica and silicate glass can be used as the reference in the interpretation of infrared spectra of our glass ceramics. According to the literature, amorphous silica shows strong IR bands at around 470 with a shoulder at 570 (bending O-Si-O), 800 (symmetric stretching Si-O-Si), 1100-1200 (asymmetric stretching Si-O-Si), and 3470 cm −1 (stretching Si-OH) [21, 22]. Any incorporation of metal cations into the structure of SiO 2 glass results in the modifying of its properties (e.g., distances between atoms) that are reflected in the infrared spectra.…”

Section: Resultsmentioning

confidence: 99%

Study of Surface Structure Changes for Selected Ceramics Used in the CAD/CAM System on the Degree of Microbial Colonization, In Vitro Tests

Pajączkowska

Nowicka

Jaworski

et al. 2019

BioMed Research International

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In the article has been presented an analysis of susceptibility of selected dental materials, made in the CAD/CAM technology. The morphology and structural properties of selected dental materials and their composites were determined by using XRPD (X-ray powder diffraction) techniques, as well as the IR (infrared) spectroscopy. Moreover, an adhesion as well as development of biofilm by oral microorganisms has been studied. It has been shown that a degree of the biofilm development on the tested dental materials depended on microorganism genus and species. Streptococcus mutans has demonstrated the best adhesion to the tested materials in comparison with Candida albicans and Lactobacillus rhamnosus. However, the sintered materials such as IPS e.max® and the polished IPS e.max® have showed the best “anti-adhesive properties” in relation to S. mutans and L. rhamnosus that have not formed the biofilm on the polished IPS e.max® sample. Furthermore, S. mutans have not formed the biofilm on both surfaces. On the contrary to S. mutans and L. rhamnosus, C. albicans has demonstrated the adhesive properties in relation to the above-mentioned surfaces. Moreover, in contrast to S. mutans and C. albicans, L. rhamnosus has not formed the biofilm on the polished IPS Empress material.

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8.1.6.7 Analcime and related silicates

Burzo

2013

Tectosilicates

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Microstructure of lucite glass-ceramics for dental use

Cited by 9 publications

References 12 publications

Bioactivity of leucite containing glass - ceramics using natural raw materials

Bioactivity of leucite containing glass - ceramics using natural raw materials

Study of Surface Structure Changes for Selected Ceramics Used in the CAD/CAM System on the Degree of Microbial Colonization, In Vitro Tests

8.1.6.7 Analcime and related silicates

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