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Original Article

J Pak Dent Assoc. 2020; 29(4): 223-227

Determination of Arsenic, Lead and Chromium contents in two types of Mineral Trioxide Aggregate using Atomic Absorption Spectrometry

Tabinda Nawaz Khan, Farhan Raza Khan.


Objective: To evaluate the acid-soluble arsenic, lead, and chromium contents in the two varieties of Mineral Trioxide Aggregate (MTA) using Atomic Absorption Spectrophotometry.
Methods: Analysis of arsenic, lead, and chromium in the two products of MTS [MProRoot MTA and MTA Angelus] were done using graphite furnace atomic absorption spectrophotometry employing 2.4 mol/L of hydrochloric acid for digestion of materials. The test materials were subjected to incubate in water and simulated body fluid (SBF) so that the leach out metal ions from the material can also quantified. Descriptive statistics reported along with ANOVA for comparison of quantitative analysis of arsenic, lead, and chromium in the extracts. One way ANOVA to evaluate the effect of metal leach out over 15 days period. Level of significance was kept at 0.05.
Results: Both varieties of MTA [ProRoot MTA and MTA Angelus] leached out extracts into water and SBF showing lower values of arsenic and lead contents in accordance to the limit set by ISO 9917-1 (2007). However, extracts of both the products had comparatively higher amount of chromium ions.
Conclusions: The total amount of arsenic, chromium, and lead released from the two cements were found to be far below than what is considered as clinically harmful.

KEYWORDS: Chromium; Arsenic; Lead, heavy metals; Mineral trioxide aggregate

Key words: Enameloplasty; adaptability; SEM; sealants; RMGIC, flowable composite

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