Physical and Chemical Properties of New Endodontic Restorative Material in Comparison with Pro Root MTA
Golsa Salehimehr1, Fatemeh Baladi2 and Hanif Allahbakhshi31Department of Endodontics, Kashan University of Medical Sciences, Kashan, Iran.
2Department of Oral Diseased and Diagnosis, Babol University of Medical Sciences, Babol, Iran.
3Department of Prosthodontics, Kashan University of Medical Sciences, Kashan, Iran.
Corresponding Author E-mail: h.allahbakhshi@yahoo.com
Abstract: Pro Root MTA has many uses in endodontic therapy but is limited by its difficult handling characteristics. X-ray diffraction analysis was used to characterize and identify crystalline phases, and energy dispersive x-ray spectrometer was used to determine the chemical composition of the test materials. Setting time was measured by Gilmore in 5 minutes. The pH of the materials was measured after mixing. The concentration of calcium ions was obtained through atomic absorption spectroscopy technique. In addition, compressive strengths of the test materials were measured by modifying the previous method. Data were compared by analysis of variance and and the Student's test (t-test). There were differences in the chemical composition and crystalline structures between the powder and set forms of any of the NERM and Pro Root MTA. Setting time in NERM and Angelus MTA samples was 25 and 14 minutes, respectively (P<0.05). The compressive strength values of NERM were greater than the Pro Root MTA. Both materials tested were alkaline and released calcium, the results revealed a higher pH for Pro Root MTA. Current findings have strongly suggested that the favorable chemical and physical properties are exhibited by NERM, but Pro Root MTA is preferred in terms of setting time. With more studies and considering the physical and chemical properties of NREM, it could be recommended for clinical application.
Keywords: Pro Root MTA; New Endodontic Restorative Material; PH; Setting Time Back to TOC