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:: Volume 25, Issue 1 (1-2013) ::
J Islam Dent Assoc Iran 2013, 25(1): 1-5 Back to browse issues page
In-Vitro Comparison of Primary Setting Time and Surface Porosity of Two Types of Mineral Trioxide Aggregate (MTA)
Sepideh Banava 1, Zohreh Janfeshan2, Mohammad ali Saghiri3
1- Assistant Professor, Department of Restorative Dentistry, School of Dentistry, Islamic Azad University. Tehran, Iran , sbanava@yahoo.com
2- Dentist, Private Practice, Tehran, Iran
3- Assistant Professor, Department of Dental Materials, School of Dentistry, Islamic Azad University. Tehran, Iran
Abstract:   (8572 Views)

  Background and Aim : There are disadvantages in using MTA, such as the extended setting time and the difficulty in its manipulation. The aim of this in vitro study was to compare the primary setting time and surface porosity of two commercial brands of tooth colored MTA .

  Materials and Methods : In this experimental study two brands of MTA were evaluated Group1: ProRoot MTA (Dentsply, USA), and group 2: Angelus MTA (Angelus, Brazil). Five samples of each material were prepared and evaluated for primary setting time with a Gilmore needle according to ISO 6876: 2001 with a cylindrical stainless steel mold (10mm×1mm) in an incubator with 37±1 degrees centigrade and relative humidity of over 95%. Specimens were prepared and observed under a scanning electron microscope (SEM) for surface porosity. Data were analyzed with T-test .

  Results : Primary setting time of the materials were 38.72±0.61 and 22.46 ± 0.61 ProRoot and Angelus MTA, respectively. Statistical analysis revealed that the differences between setting times of the materials were significant (p<0.001). ProRoot MTA showed better surface characterization compared with Angelus MTA.

  Conclusion : The primary setting time of Angelus MTA was lower than that of ProRoot MTA but the surface characterization (topography and porosity) of ProRoot MTA was better than that of Angelus MTA after final setting time.

 

 

Keywords: Setting time, Mineral trioxide aggregate, Scanning electron microscopy
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Type of Study: Orginal | Subject: Restorative Dentistry
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Banava S, Janfeshan Z, Saghiri M A. In-Vitro Comparison of Primary Setting Time and Surface Porosity of Two Types of Mineral Trioxide Aggregate (MTA). J Islam Dent Assoc Iran. 2013; 25 (1) :1-5
URL: http://jidai.ir/article-1-1316-en.html


Volume 25, Issue 1 (1-2013) Back to browse issues page
Journal of Islamic Dental Association of Iran

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