A study of the rheological properties of endodontic sealers

Abstract

There was a significant difference between the flow of Tubliseal EWT and the other sealers tested in the two-plate test; capillary flow was affected by sealer, internal diameter, strain rate and powder : liquid ratio. The null hypotheses were rejected.

Microstructure and wettability of root canal dentine and root canal filling materials after different chemical irrigation

“…The results for the flow of Apexite and Endomethasone are in concordance with data demonstrating that zinc oxide eugenolbased endodontic sealers exhibit lower flow values than calcium hydroxide and epoxy resin-based [13,19,34]. On the contrary, there are no data in the literature regarding the flow of Acroseal.…”

“…Several adhesive and structural properties of these materials contribute to the quality of the obturation and oral bacterial adhesion. The density of dentinal tubules, which remain open on the root canal surface, the diameter of the tubules, the surface free energy (SFE) of the dentine and gutta-percha, and the flow of the endodontic sealer [10][11][12][13][14] are considered as the most important parameters.…”

Physical Properties of 5 Root Canal Sealers

“…have been proposed to evaluate the flow of endodontic sealers (15,19,20). However, limited data are available about the viscosity of endodontic sealers, which is an important parameter to determine their flow characteristics.…”

Mineral Trioxide Aggregate: A review of clinical usage and investigations of the effects of modifying particle size

“…Rheometry has been used previously to assess the flow properties of endodontic sealers through narrow capillaries (as a model of flow into root canals) 373 and the setting of GICs using either a "displacement rheometer", which measures the developing elastic recovery of the sample as it cures 373 or a cone/plate rheometer in steady shear mode. 374,375 To date, the use of rheology to characterise MTA cements has been limited to one investigation, While the choice of a percentage is arbitrary, the results must match the clinical properties of the material.…”

“…This has been used to measure the flow properties of endodontic sealers 373 and for testing the properties of GICs. 374,375,385 An advantage of this approach is that the clinical handling and setting properties relate strongly to the flow of the material.…”