Microstructure and wettability of root canal dentine and root canal filling materials after different chemical irrigation
Ilić, Dragan V.
Rakočević, Zlatko Lj.
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The objective of this study was to determine the effects of various irrigation solutions on root canal dentine and gutta-percha surface properties. In addition, the effects of disinfectant chemicals on the wettability and surface morphological properties of the filling materials were evaluated. Ethylenediaminetetraacetic acid (EDTA), citric acid, and ozone were employed as irrigation solutions for dentine and gutta-percha treatment. Thereafter, the samples microstructure, degree of mineralization, and mechanical properties were assessed by means of quantitative backscattered electron imaging (qBEI) and reference point indentation (RN). A contact angle analyzer was used to measure adhesion on the tested materials. Here, EDTA had the most significant affect on both the mechanical properties and the adhesive behavior of dentine. Citric acid did not affect dentine wettability, whereas the indentation properties and the mineralization were reduced. Similar effects were observed when ozone w...as used. The dentinal tubules were significantly widened in citric acid compared to the ozone group. EDTA causes considerable micromechanical surface alteration of dentine and gutta-percha, but represents the best option in clinical cases where a high adhesiveness of the filling materials is desired. (c) 2015 Elsevier B.V. All rights reserved.
Keywords:EDTA / Citric acid / Ozone / Surface free energy / Reference point indentation / Quantitative backscattered electron microscopy
Source:Applied Surface Science, 2015, 355, 369-378
- Functional, Functionalized and Advanced Nanomaterials (RS-45005)
- German Academic Exchange Service, (DAAD), Ministry of Education and Science of the Republic of Serbia, South-East-Europe Cooperation of University Medical Center Hamburg-Eppendorf