Journal article
Concentration-dependent Effect of Sodium Hypochlorite on Stem Cells of Apical Papilla Survival and Differentiation
Journal of endodontics, Vol.40(1), pp.51-55
01/2014
DOI: 10.1016/j.joen.2013.07.026
PMID: 24331991
Abstract
Intracanal disinfection is a crucial step in regenerative endodontic procedures. Most published cases suggest the use of sodium hypochlorite (NaOCl) as the primary irrigant. However, the effect of clinically used concentrations of NaOCl on the survival and differentiation of stem cells is largely unknown. In this study, we tested the effect of various concentrations of NaOCl on the stem cells of the apical papilla (SCAPs) survival and dentin sialophosphoprotein (DSPP) expression.
Standardized root canals were created in extracted human teeth and irrigated with NaOCl (0.5%, 1.5%, 3%, or 6%) followed by 17% EDTA or sterile saline. SCAPs in a hyaluronic acid–based scaffold were seeded into the canals and cultured for 7 days. Next, viable cells were quantified using a luminescence assay, and DSPP expression was evaluated using quantitative real-time polymerase chain reaction.
There was a significant reduction in survival and DSPP expression in the group treated with 6% NaOCl compared with the untreated control group. Comparable survival was observed in the groups treated with the lower concentrations of NaOCl, but greater DSPP expression was observed in the 1.5% NaOCl group. In addition, 17% EDTA resulted in increased survival and DSPP expression partially reversing the deleterious effects of NaOCl.
Collectively, the results suggest that dentin conditioning with high concentrations of NaOCl has a profound negative effect on the survival and differentiation of SCAPs. However, this effect can be prevented with the use of 1.5% NaOCl followed by 17% EDTA. The inclusion of this irrigation regimen might be beneficial in regenerative endodontic procedures.
Details
- Title: Subtitle
- Concentration-dependent Effect of Sodium Hypochlorite on Stem Cells of Apical Papilla Survival and Differentiation
- Creators
- David E Martin - Department of Endodontics, University of Texas Health Science Center at San Antonio, TexasJose Flavio A De Almeida - Department of Restorative Dentistry, Piracicaba School of Dentistry, State University of Campinas, São Paulo, BrazilMichael A Henry - Department of Endodontics, University of Texas Health Science Center at San Antonio, TexasZin Z Khaing - Department of Biomedical Engineering, University of Texas, Austin, TexasChristine E Schmidt - Department of Biomedical Engineering, University of Texas, Austin, TexasFabricio B Teixeira - Department of Endodontics, University of Texas Health Science Center at San Antonio, TexasAnibal Diogenes - Department of Endodontics, University of Texas Health Science Center at San Antonio, Texas
- Resource Type
- Journal article
- Publication Details
- Journal of endodontics, Vol.40(1), pp.51-55
- DOI
- 10.1016/j.joen.2013.07.026
- PMID
- 24331991
- NLM abbreviation
- J Endod
- ISSN
- 0099-2399
- eISSN
- 1878-3554
- Publisher
- Elsevier Inc
- Grant note
- DOI: 10.13039/100002569, name: American Association of Endodontists Foundation
- Language
- English
- Date published
- 01/2014
- Academic Unit
- Molecular Physiology and Biophysics; Endodontics; Pathology; Radiation Oncology; Urology
- Record Identifier
- 9984065701702771
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