Physicochemical and pulp tissue dissolution properties of some household bleach brands compared with a dental sodium hypochlorite solution

Journal of Endodontics
Holger JungbluthMatthias Zehnder

Abstract

Many clinicians use household bleach to irrigate root canals. Sodium hypochlorite solutions are also available from dental suppliers. We compared physicochemical features of these products and investigated their impact on pulp tissue dissolution. Six different brands of household bleach were bought from drugstores. These were compared with Chlor-XTRA and technical NaOCl solutions of controlled concentration and alkalinity regarding their chlorine content (wt% NaOCl), pH, alkaline capacity, osmolarity, surface tension (Wilhelmy plate method), and price. Bovine pulp tissue (n = 10 specimens per group) dissolution at 37°C by test and control solutions adjusted to 1.0% NaOCl was assessed. Reduction in tissue weight was compared between groups by one-way analysis of variance, followed by Bonferroni correction (P < .05). The pH of undiluted solutions ranged between 11.1 and 12.7. Batches of the same product differed in NaOCl content. No product contained more than an equivalent of 0.1 mol/L NaOH. One household bleach brand (Safeway Bleach Summit Fresh) was slightly alkalized; the other solutions under investigation were not. Osmolarity was similar between products. The surface tension of Chlor-XTRA and Safeway Bleach Summit Fresh was...Continue Reading

References

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Apr 1, 1994·Endodontics & Dental Traumatology·J PapaH H Messer
Apr 25, 2006·Journal of Endodontics·Matthias Zehnder
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Feb 23, 2010·Journal of Endodontics·Bonnie RetamozoMahmoud Torabinejad
Apr 19, 2011·Journal of Endodontics·Holger JungbluthMatthias Zehnder

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Citations

Jul 25, 2013·Journal of Endodontics·Iris Slutzky-GoldbergHagay Slutzky
Jul 25, 2013·Journal of Endodontics·Gustavo De-DeusMatthias Zehnder
Sep 18, 2012·Journal of Endodontics·Arindam Dutta, William P Saunders
Nov 29, 2012·International Endodontic Journal·G Rossi-FedeleJ A P de Figueiredo
Jul 31, 2013·International Endodontic Journal·G Rossi-Fedele, A R Guastalli
Feb 13, 2015·Brazilian Dental Journal·Giampiero Rossi-Fedele, Andrea R Guastalli
Nov 10, 2017·International Endodontic Journal·A ZollingerM Zehnder
Feb 2, 2018·The Open Dentistry Journal·Zahed MohammadiHamid Jafarzadeh
Mar 5, 2020·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Patricia P WrightLaurence J Walsh
Jan 10, 2019·Journal of Applied Oral Science : Revista FOB·Júlia Eick IglesiasFabiana Soares Grecca
Mar 27, 2020·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Antonio J CondeRafael Cisneros
Nov 2, 2020·Journal of Endodontics·Erik TrautmannMatthias Zehnder
Jan 1, 2016·The Journal of Contemporary Dental Practice·Mário Tanomaru-FilhoJuliane Maria Guerreiro-Tanomaru

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