Author(s): Koani F, Kamberi B, Dragusha E
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Abstract OBJECTIVES: The objective of this study was to evaluate the effectiveness of manual, sonic-air and ultrasonic instrumentation with varying irrigation protocols on removal of the smear layer from root canal walls. STUDY DESIGN: Sixty extracted single rooted human teeth stored in 0.5\% saline were used. Periodontal soft tissues were removed followed by crown separation at the cementoenamel junction (CEJ). All the teeth were randomly divided into three groups. Group I was manually instrumented and irrigated with 5.25\% sodium hypochlorite (NaOCl) alone and 17\% Ethylenediaminetetraacetic acid (EDTA) alternately, same as sonically instrumented Group II and ultrasonically instrumented Group III. The controls for all groups were irrigated with saline solution. RESULTS: Ultrasonic over the sonic-air and manual technique, and the use of a combination of two different solutions (17\% EDTA and 5.25\% NaOCl) alternatively yielded better outcome. CONCLUSIONS: Ultrasonic, sonic-air and manual instrumentation of the root canal and irrigation with combined solutions is effective in removal of the smear layer from the instrumented walls of the root canal.
This article was published in J Conserv Dent
and referenced in Journal of Microbial & Biochemical Technology
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