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Title: Hypochlorite solution for root canal irrigation that lacks a chlorinated odor
Authors: La ongthong Vajrabhaya
Vanida Sangalungkarn
Ratchapin Srisatjaluk
Suwanna Korsuwannawong
Chareerut Phruksaniyom
Rangsit University
Mahidol University
Keywords: Dentistry
Issue Date: 1-Jan-2017
Citation: European Journal of Dentistry. Vol.11, No.2 (2017), 221-225
Abstract: © 2017 European Journal of Dentistry. Objectives: This is an in vitro study to develop a formulation of a hypochlorite solution for root canal irrigation that lacks a chlorinated odor. The antibacterial effect, tissue dissolution efficacy, and the cytotoxicity of the solution were assessed in cell culture and were compared with those of commercial sodium hypochlorite (NaOCl) solutions. Materials and Methods: Trichloroisocyanuric acid (TCA) was used as the source of hypochlorite ions in solution. All required properties of the NaOCl irrigant were evaluated and compared with those of original 2.5% NaOCl solutions currently in use. Results: Our results revealed that a TCA 3.5% + 1/6 Buffer-1 solution passed the short-term stability test. Moreover, no odor of chlorine gas was detected by three independent observers. The hypochlorite ion content and pH were stable over an incubation period of 4 weeks. The new solution did not differ from commercial products in terms of the dissolution property on bovine pulpal tissue (P > 0.05). Moreover, the antibacterial effect of this solution on Enterococcus faecalis did not differ from that of the commercial products (P > 0.05). In addition, our biocompatibility analysis demonstrated no difference among the tested solutions (P > 0.05). Conclusions: According to the results of all properties tested, TCA 3.5% + 1/6 Buffer-1 could be considered an option for NaOCl irrigation with the benefit of no detectable chlorine odor.
ISSN: 13057464
Appears in Collections:Scopus 2016-2017

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