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The properties of feldspathic dental porcelain from Tanzanian aluminosilicate materials

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dc.contributor.author Lugwisha, E. H. J.
dc.contributor.author Siafu, S. I.
dc.date.accessioned 2019-05-24T08:50:38Z
dc.date.available 2019-05-24T08:50:38Z
dc.date.issued 2014-11-18
dc.identifier.issn 2230-9926
dc.identifier.uri http://dspace.nm-aist.ac.tz/handle/123456789/197
dc.description Research Article published by International Journal of Development Research Vol. 4, Issue, November 2014 en_US
dc.description.abstract Kaolin and quartz from Pugu and feldspar from Morogoro were used to produce feldspathic dental porcelain bodies. Mineralogical results from XRD revealed the presence of kaolinite, illite, microcline and clinochlore in the kaolin samples; albite, microcline, sanidine in the feldspar samples and only silica in the quartz samples. The chemical results studies by XRF revealed the presence of BaO, SiO2, Al2O3, TiO2, Cr2O3, MnO, K2O, CaO, Cl, SO3, MgO, Na2O, and Fe2O3 in varying proportions. Particle size distribution of all the raw materials were determined and particles <63 μm were used for preparation of batches. The batches of different compositions with ranges: quartz (12-22%), feldspar (75-88%) and kaolin (3-5%) were fired at 1100, 1200 and 1250 oC, and the developed properties were tested. The physico-mechanical properties studied exhibited volumetric shrinkage between 2 and 55.17%, open porosity between 6.67 and 40.00%, water of absorption between 7.1 and 40%, bulk densty of 1.43 – 5.68 g/cm3, and compressive strength at 0.13 - 32.25 MPa. The optimal firing temperature for the best results was found to be 1250 oC. The results obtained indicate that kaolin and quartz from Pugu and feldspar from Morogoro are potential raw materials for the production of dental porcelain. en_US
dc.language.iso en_US en_US
dc.publisher International Journal of Development Research en_US
dc.subject Feldspathic dental porcelain en_US
dc.subject Physico-mechanical properties en_US
dc.subject Chemical composition en_US
dc.title The properties of feldspathic dental porcelain from Tanzanian aluminosilicate materials en_US
dc.type Article en_US


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