Maryam Maqsood, Hashmat Gul, Muhammad Kaleem.
Comparative in-Vitro Evaluation of Material Properties of Commonly Used Root-End Filling Materials.
Ann King Edward Med Uni Jan ;29(4):304-8.

Background: Standard guidelines for performing conventional endodontic procedures have undergone a number of modifications recently. An ideal characteristics of a root end filling materials include dimensional stability; radio-opacity; non-resorbability; compressibility, adequate working and quick setting time; biocompatibility especially in peri-radicular area; bioactivity and easy handling properties. Objectives: This study evaluated and compared different root-end filling materials by determining their solubility, sorption and fluid uptake after immersion in deionized water over a period of 28 days. Methods: Materials were mixed a per manufacturer`s instructions and disc-shaped specimens were made (15mm +- 1mm). After 24h curing, discs were immersed in deionized water and incubated at 37.1oC. At specified time intervals, measurements for mass and volume of discs were taken to calculate fluid sorption, solubility and uptake. Results: Fluid uptake of MTA was 0.029 +- 0.0025g at day 1 and 0.066 +- 0.004g at day 28 whereas, for Acroseal it was 0.0006 +- 0.0001g at day 1 and 0.006 +- 0.001g at day 28. Fluid uptake of MTA and Acroseal increased with passage of time but for Biodentine fluid uptake decreased from day 1 (0.017 +- 0.005g) to day 28 (0.008 +- 0.005g). Acroseal exhibited lowest values of fluid sorption (0.006 +- 0.0005%) and solubility (0.0006 +- 0.00005%) whereas bio-dentine exhibited maximum values of fluid sorption (0.06 +- 0.007%) and solubility (0.04 +- 0.03%). Conclusions: Percent water solubility and sorption of Biodentine is higher than MTA and Acroseal, whereas its fluid uptake decreases over a period of 28 days in comparison to MTA and Acroseal, indicating its stability and thus making Biodentine a better root-end filling material.

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