Effect of Synthetic Tissue Fluid on Microleakage of Grey and White Mineral Trioxide Aggregate as Root-End Filling Materials An in vitro study
Journal Title: Sultan Qaboos University Medical Journal - Year 2012, Vol 12, Issue 3
Abstract
Objectives: Te success of endodontic surgery has been shown to depend partly on the apical seal. Grey mineral trioxide aggregate (GMTA) produces hydroxyapatite twice as often as white mineral trioxide aggregate (WMTA) when suspended in a phosphate buffered saline (PBS) solution. Te aim of this in vitro study was to compare the microleakage phenomenon of gray and white mineral trioxide aggregates as root-end flling materials after immersion in synthetic tissue fluid (STF). Methods: 55 single-rooted extracted maxillary anterior human teeth were divided into two experimental groups of 20 teeth each, plus 3 groups of 5 teeth each as two negative and one positive control groups. Te root canals were cleaned, shaped, and laterally compacted with gutta-percha. Te root ends were resected and 3 mm deep cavities were prepared. Te root-end preparations were flled with GMTA or WMTA in the experimental groups. Leakage was determined using a dye penetration method. Data were analysed using analysis of variance (ANOVA) at the 0.05 level of signifcance. Results: Te mean dye leakage was 0.40 ± 0.1 mm for GMTA and 0.50±0.1 mm for WMTA groups, respectively. Tere was no signifcant difference between the two experimental groups (P = 0.14). Conclusion: Despite the different properties and behaviours of GMTA and WMTA in STF, there were no signifcant differences in microleakage when using GMTA or WMTA.
Authors and Affiliations
Mehrdad Lotf| Research Center of Pharmaceutical Nano Technology, Tabriz University (Medical Sciences), Tabriz, Iran, Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran, Sepideh Vosoughhosseini| Department of Oral and Maxillofacial Pathology, Dental Faculty, Tabriz, Iran, Mohammad Ali Saghiri| Kamal Asgar Research Center (KARC), Azad University, Dental Branch, Tehran, Iran, Saeed Rahimi| Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran, Vahid Zand| Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran, Mohammad Forough Reyhani| Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran, Mohammad Samiei| Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran, Negin Ghasemi| Department of Endodontics, Dental Faculty, Tabriz University (Medical Sciences), Tabriz, Iran, Payman Mehrvarzfar| Department of Endodontics, Dental Branch, Islamic Azad University, Tehran, Iran, Shahram Azimi| Department of Endodontics, Dental Branch, Islamic Azad University, Tehran, Iran, Noushin Shokohinejad| Department of Endodontics/Dental Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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