M Ali Saghiri1, Asal Shabani2, Armen Asatourian3, Nader Sheibani4. 1. Department of Dental Materials, Dental Material Research Center, Azad University, Tehran Branch, Tehran, Iran; Departments of Ophthalmology and Visual Sciences, Biomedical Engineering and Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI. 2. Department of Dental Materials, Azad University, Tehran Branch, Tehran, Iran. 3. Angiogenesis Regenerative Medicine Sector, Dr. H. Afsar Lajevardi Research Cluster, Shiraz, Iran. 4. Department of Ophthalmology and Visual Sciences, Biomedical Engineering and Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI.
Abstract
INTRODUCTION: Calcium silicate-based cements physical properties is influenced by environmental changes. AIM: Here, we intended to evaluate the effect of storage medium on surface porosity of root Mineral Trioxide Aggregate (MTA) and Biodentine cement. MATERIALS AND METHODS: A total of 40 polyethylene tubes were selected and divided into two groups: Group A (MTA) and Group B (Biodentine). Each group was subdivided into two subgroups (n=10). In subgroups A1 and B1, tubes were transferred to Distilled Water (DW), while samples of subgroup A2 and B2 were transferred to Synthetic Tissue Fluid (STF) as storage medium and samples were stored for three days. All specimens were then placed in a desiccator for 24 hours and then subject to surface porosity evaluation by Scanning Electron Microscopy (SEM) at ×500, ×1000, ×2000 and ×5000 magnifications. The number and the surface porosities were determined by Image J analysis. Data were analyzed by ANOVA at level of significance of p<0.05. RESULTS: The lowest surface porosity was observed in MTA samples stored in STF and the highest was in Biodentine samples stored in DW. Significant differences were noted between groups and subgroups of each group (p< 0.05). MTA samples stored in DW and STF showed significantly lower surface porosities compared to Biodentine samples (p < 0.05). CONCLUSION: Storage medium can drastically affect the surface porosity of tested calcium silicate-based cements. However, MTA showed lower surface porosity compared to Biodentine cement, which can result in lower microleakage in applied area.
INTRODUCTION:Calcium silicate-based cements physical properties is influenced by environmental changes. AIM: Here, we intended to evaluate the effect of storage medium on surface porosity of root Mineral Trioxide Aggregate (MTA) and Biodentine cement. MATERIALS AND METHODS: A total of 40 polyethylene tubes were selected and divided into two groups: Group A (MTA) and Group B (Biodentine). Each group was subdivided into two subgroups (n=10). In subgroups A1 and B1, tubes were transferred to Distilled Water (DW), while samples of subgroup A2 and B2 were transferred to Synthetic Tissue Fluid (STF) as storage medium and samples were stored for three days. All specimens were then placed in a desiccator for 24 hours and then subject to surface porosity evaluation by Scanning Electron Microscopy (SEM) at ×500, ×1000, ×2000 and ×5000 magnifications. The number and the surface porosities were determined by Image J analysis. Data were analyzed by ANOVA at level of significance of p<0.05. RESULTS: The lowest surface porosity was observed in MTA samples stored in STF and the highest was in Biodentine samples stored in DW. Significant differences were noted between groups and subgroups of each group (p< 0.05). MTA samples stored in DW and STF showed significantly lower surface porosities compared to Biodentine samples (p < 0.05). CONCLUSION: Storage medium can drastically affect the surface porosity of tested calcium silicate-based cements. However, MTA showed lower surface porosity compared to Biodentine cement, which can result in lower microleakage in applied area.
Authors: Alaina P Leiendecker; Yi-Pin Qi; Allen N Sawyer; Li-Na Niu; Kelli A Agee; Robert J Loushine; Roger N Weller; David H Pashley; Franklin R Tay Journal: J Endod Date: 2012-01-31 Impact factor: 4.171
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