2005
DOI: 10.1097/01.don.0000133156.85164.b2
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Chemical Differences Between White and Gray Mineral Trioxide Aggregate

Abstract: The purpose of this research was to determine and compare the composition of white mineral trioxide aggregate and gray mineral trioxide aggregate. Electron probe microanalysis results indicated that lime (CaO), silica (SiO2), and bismuth oxide (Bi2O3) were the dominant compounds in each case and were present at comparable levels in either of the types of mineral trioxide aggregate analyzed. It was concluded that the most significant differences observed were between the measured concentrations of Al2O3 (+122%)… Show more

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Cited by 232 publications
(220 citation statements)
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“…13 The tooth-coloured mineral trioxide aggregate lacks the aluminoferrite phase that imparts the grey colour of MTA Original.…”
Section: Introductionmentioning
confidence: 99%
“…13 The tooth-coloured mineral trioxide aggregate lacks the aluminoferrite phase that imparts the grey colour of MTA Original.…”
Section: Introductionmentioning
confidence: 99%
“…Derivados desse material surgiram no mercado, no intuito de melhorar as propriedades desse cimento. Dentre estes está o MTA Ângelus®, por exemplo, é composto de 80% de cimento Portland e 20% de óxido de bismuto, como foi relatado por Duarte et al [10] Segundo Asgary et al, [11] assim como o cimento Portland é encontrado na variedade branca e cinza, o cimento MTA é encontrado comercialmente em duas formulações, sendo uma na cor cinza e outra na cor branca. O material de cor branca apresenta composição similar ao cinza, no entanto, sem óxido de ferro em sua composição.…”
Section: Cerâmicos Endodônticosunclassified
“…MTA is composed mainly of lime (CaO), silica (SiO 2 ) and bismuth oxide (Bi 2 O 3 ). White MTA (WMTA) contained significantly lesser amount of aluminum oxide (Al 2 O 3 ), magnesium oxide (MgO) and ferric oxide (Fe 2 O 3 ) than grey MTA (GMTA) [6] .It is of interest to know that MTA contains considerably lesser heavy metals such as Arsenic, Lead, Iron, and Chromium than Portland cement [7] Proroot MTA (Dentsply Tulsa Dental) appears to be safe in terms of its heavy metal content [8] . When MTA powder is mixed with water calcium hydroxide and calcium silicate hydrate are formed which transform into a poorly crystallized amorphous gel.…”
Section: Chemistrymentioning
confidence: 99%