By a News Reporter-Staff News Editor at Journal of Technology -- Investigators publish new report on Microscopy and Microanalysis. According to news reporting from Tehran, Iran, by VerticalNews journalists, research stated, "This study evaluated the effects of nanoindentation on the surface of white mineral trioxide aggregate (WMTA), Bioaggregate and Nano WMTA cements. Cements were mixed according to the manufacturer directions, condensed inside glass tubes, and randomly divided into three groups (n=8)."
The news correspondents obtained a quote from the research from Azad University, "Specimens were soaked in synthetic tissue fluid (pH=7.4) and incubated for 3 days. Cement pellets were subjected to nanoindentation tests and observed by scanning electron microscopy. Then, the images were processed and the number of cracks and total surface area of defects on the surface were calculated and analyzed using ImageJ. Data were submitted to one-way analysis of variance and a post hoc Tukey's test. The lowest number of cracks and total surface of defects were detected in Nano WMTA samples; however, it was not significantly different from WMTA samples (p=0.588), while the highest values were noticed in Bioaggregate specimens that were significantly different from Nano WMTA and WMTA (p=0.0001). The surface of WMTA and Nano WMTA showed more resistance after exposure to nano-compressive forces which indicated a better surface tolerance against these forces and crack formation."
According to the news reporters, the research concluded: "This suggests these substances are more tolerant cement materials which can predictably withstand loaded situations in a clinical scenario."
For more information on this research see: Mechanical response of dental cements as determined by nanoindentation and scanning electron microscopy. Microscopy and Microanalysis, 2013;19(6):1458-64. (Cambridge University Press - www.cambridge.org; Microscopy and Microanalysis - journals.cambridge.org/action/displayJournal?jid=MAM)
Our news journalists report that additional information may be obtained by contacting M.A. Saghiri, Dept. of Dental Material, Center for Craniofacial Research, Azad University (Tehran Branch), Tehran, Iran. Additional authors for this research include A. Nazari, F. Garcia-Godoy, A. Asatourian, M. Malekzadeh and M. Elyasi.
Keywords for this news article include: Iran, Asia, Tehran, Microscopy and Microanalysis.
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