AIM To examine the effect of condensation pressure on surface hardness, microstructure and compressive strength of mineral trioxide aggregate (MTA). METHODOLOGY White ProRoot MTA (Dentsply Tulsa Dental, Johnson City, TN, USA) was mixed and packed into cylindrical polycarbonate tubes. Six groups each of 10 specimens were subjected to pressures of 0.06, 0.44, 1.68, 3.22, 4.46 and 8.88 MPa respe...

OBJECTIVES This study evaluated the solubility, dimensional alteration, pH, electrical conductivity, and radiopacity of root perforation sealer materials. MATERIALS AND METHODS For the pH test, the samples were immersed in distilled water for different periods of time. Then, the samples were retained in plastic recipients, and the electrical conductivity of the solution was measured. The solu...

INTRODUCTION This in vitro study compared the cytotoxic effects of three commercially available MTA formulations naming ProRoot MTA (PMTA), Angelus MTA (AMTA), and Root MTA (RMTA), with calcium-enriched mixture (CEM) cement and a new nanohybrid MTA (NMTA) on human dental pulp stem cells (DPSC). METHODS AND MATERIALS Four disc-shaped specimens of each material were prepared. After completion o...

introduction : solubility of root filling materials is heavily influenced by the environment they are in contact with. this study compared the solubility of proroot mta in deionized water and synthetic tissue fluid. materials & methods: forty specimens of prepared mta were immersed in deionized water and synthetic tissue fluid (20 samples each). the solubility was assessed after 7 and 28 days. ...

To evaluate the long-term effect of chlorhexidine (CHX) and dimethyl sulfoxide (DMSO) on sealing ability biomineralization two different calcium silicate cements (CSC) in root canal. Sixty human third molar canals were obturated with ProRoot MTA or Biodentine. Before obturation irrigated saline (control), 2% CHX 5% DMSO. Microleakage was tested after three days six months. After additional mont...

INTRODUCTION Reduced surface microhardness and decreased sealing ability have been shown after the placement of mineral trioxide aggregate (MTA) in an acidic environment. In this study, the effect of an acidic environment on the push-out strength of MTA was evaluated. METHODS Eighty root dentin slices from freshly extracted single-rooted human teeth were sectioned and their lumen instrumented...