Title: An in vitro evaluation of calcium hydroxide medication removal using various irrigants and methods
Abstract: Aims: It is necessary to clean the dentine wall of smear layer, debris, and intra-canal medicament prior to obturation. Any residual intra-canal medicament interferes with the sealing ability of root canal sealers to the root dentine. Hence, effective and complete removal of calcium hydroxide intra-canal medicament is an important aspect in endodontic therapy. Settings and Design: Forty-four single rooted mandibular premolars were selected. After access cavity preparation and coronal enlargement, working length was established at 1 mm short of the apical foramen. Two negative samples served as the control group and the remaining teeth were filled with calcium hydroxide powder. Materials and Methods: The removal of this medicament was attempted by 0.5% sodium hypochlorite (Group I), 17% ethylenediaminetetracetic acid in combination with sodium lauryl sulfate (Group II), mechanical agitation with CanalBrush (Group III), use of master apical file (Group IV) and passive ultrasonic irrigation (Group V). The teeth were sectioned and visualized under a scanning electron microscope and analyzed using graded scoring criteria. Statistical Analysis Used: The statistical analysis was performed using Kruskal-Wallis and Mann-Whitney test. Results: Activated irrigation technique, that is, passive ultrasonic irrigation proved more effective than syringe irrigation. Conclusions: Although no single material or technique removed calcium hydroxide completely, a combination of techniques and solutions shall prove beneficial.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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