Abstract
The authors studied the consistency, setting time, and dimensional changes of five products used for filling root canals: Fillcanal (new Grossman sealer), Endomethazone, Trincanal (pulp canal sealer), Alpha Canal, and zinc oxide-eugenol. The consistency test was adapted from No. 8 of the Brazilian Group of Specifications for Dental Materials. The setting time was verified by the use of the penetrometer (needle) and its use adapted from the recommendations of the same specification. The dimensional alterations were observed with a Leitz Wetzlar measuring microscope, the specimen having been measured upon a surface of mercury. The authors concluded that the ideal clinical consistency is obtained when the mixture can be picked up and held with the spatula upside down without dropping off for 10 seconds, or when its fluidity permits adherence between the spatula and the glass slab up to a height of 2 cm. The setting time and dimensional changes are directly related to the proportion of powder to liquid, with the ideal clinical consistency giving the best results.
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