Sealing ability of white and grey MTA root-end filling materials

Objectives: The aim of this study was to compare the sealing ability of white and grey ProRoot MTA as root end filling materials and to assess the effect of two different media solutions on microleakage using fluid transport technique.

Methods: Forty-six single-rooted human extracted teeth were selected. After root-end preparation, root-end cavities were made ultrasonically and by each test material, 20 cavities were filled. Experimental groups were divided into two subgroups of 10 teeth each stored in either de-ionized water or human blood serum. Six remained teeth were prepared as negative and positive controls. Microleakage was measured 24 hours, 7 days, 14 days and 30 days after root-end filling procedure. The data were analyzed using one-way ANOVA, with á = 0.05 as the level for statistical significance.

Results: Negative and positive controls responded as expected. Although the samples stored in blood serum demonstrated significantly less microleakage than de-ionized water group, regardless of type of material (p<0.001), there was not significant difference in microleakage between test materials (p>0.05).

Conclusions: On the limitations of this in vitro study, it was concluded that sealing ability of white and grey MTA are the same. Furthermore, in order to obtain more similar results to clinical conditions, it is suggested to store MTA filled teeth in blood serum solution.