Evaluation of the efect of EDTA, EGTA and CDTA on dentin adhesiveness and microleakage with different root canal sealers

Abstract

The effect of chelating solutions EDTA, EGTA and CDTA on human dentin adhesiveness and microleakage with 4 sealers (Sealer 26, Sealapex, N-Rickert and Endofill) was evaluated in vitro. Whether or not there was a mathematical correlation between the tests of adhesiveness and microleakage was also evaluated. A total of eighty maxillary and mandibular molars were used to test adhesiveness. After wearing of the occlusal surface to obtain a flat surface, the sealer was placed with an aluminum cylinder (10 mm x 6 mm). Adhesiveness was evaluated with a 4444 Instron universal testing machine. Microleakage was evaluated in 160 maxillary canines after root canal instrumentation, obturation and clearing. The penetration of India ink in the apical region was measured with a measurescope. The teeth were divided into 4 groups: group 1, distilled water, group 2, EDTA; group 3, EGTA; group 4, CDTA. Sealer 26 and EDTA had the best results (p<0.01) for adhesiveness and microleakage. There was no correlation between the test for adhesiveness and microleakage.

Solubility and Dimensional Change after Setting of Root Canal Sealers: A Proposal for Smaller Dimensions of Test Samples

“…This cracking was also verified in some samples of group MS6 for Endofill sealer. For the AH Plus sealer, no difficulties were found in the removal of the test samples, probably as a result of its higher cohesive strength (21). The use of the molds of group MS5 can be suggested for preparing samples for the solubility test.…”

Common Operative Procedural Errors and Clinical Factors Associated with Root Canal Treatment

“…Different properties of endodontic sealers have been discussed (105)(106)(107)(108), but the endodontic professionals still do not have a material considered ideal. Adherence ability to dentinal walls, with a sealing quality to avoid infiltration, with biocompatibility and stimulation the healing process of the periapical tissues constitute ideal properties.…”

Physicochemical properties of endodontic sealers of different bases

“…These materials should present biocompatibility 15,21 and suitable antimicrobial 28 and physiochemical properties 5,19 . In this context, it is important to study the properties of the filling materials in order to establish the appropriate parameters for the development of new products, as well as to evaluate those already available on the market 25 .…”