Avaliação das propriedades físico-químicas: avaliação do tempo de endurecimento e solubilidade dos cimentos endodônticos AH-Plus e Sealer 26

Abstract

The Root Canal Sealers are of great importance for the success of obturation root canals and for this they must possess several properties, among them, insolubility. The objective of this research was to evaluate the physico-chemical properties: hardening time and solubility between the AH Plus and Sealer 26 cements, under ANSI / ADA Specification No. 57. All samples of the two cements were oven-dried at constant temperature of 37 ° C and 95% relative humidity. In the hardening time test the stainless steel rings were filled with cement, placed in the oven and the hardening of the endodontic cement was measured with the Gilmore needle. For the solubility test, the Teflon discs were filled with the endodontic cements, placed in a greenhouse for a period of 3 times the set time, removed from the teflon molds, weighed in the precision scale and placed in containers with 7.5 Ml of distilled water and placed in a greenhouse for 7 days, after being removed from the greenhouse, were placed in the dehumidifier for another 7 days and then weighed in the precision scale, after which a percentage of the difference between the initial and final mass was obtained. It is concluded that AH Plus cement presented in all the tests performed characteristics that conform to the ANSI / ADA specification Nº57;