In vitro mechanical properties of mineral trioxide aggregate in moist and dry intracanal environments

0497497 - FZÚ 2019 RIV IR eng J - Článek v odborném periodiku
Žižka, R. - Čtvrtlík, Radim - Tomáštík, Jan - Fačevicová, K. - Gregor, L. - Šedý, J.
In vitro mechanical properties of mineral trioxide aggregate in moist and dry intracanal environments.
Iranian Endodontic Journal. Roč. 13, č. 1 (2018), s. 20-24. E-ISSN 2008-2746
Institucionální podpora: RVO:68378271
Klíčová slova: microhardness * mineral trioxide aggregate * modulus of elasticity * nanoindentation
Obor OECD: Dentistry, oral surgery and medicine

The purpose of this study was to examine the microhardness and modulus of elasticity (MOE) of White ProRoot MTA (Dentsply Tulsa Dental, Tulsa, OK) after setting in moist or dry intracanal conditions. Methods and Materials: To simulate root canal system, 14 polyethylen molds with internal diameter of 1 mm and height of 12 mm were used. These molds were filled with 9-mm thick layers of White ProRoot Mineral Trioxide Aggregate (MTA: Dentsply Tulsa Dental, Tulsa, OK). The experimental group (n=7) had a damp cotton pellet with 1.5 mm height and a 1.5 mm layer of resin composite placed on it. In control group (n=7) the whole 3 mm above MTA were filled with resin composite. The specimens were kept in 37°C and relative humidity of 80% for 4 days in order to simulate physiological conditions.
Trvalý link: http://hdl.handle.net/11104/0291648