Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics
October 21, 2011 · via Europe PMC
Penetration into dentin of sodium hypochlorite associated with acid solutions.
Kuga MC, Gouveia-Jorge É, Tanomaru-Filho M, Guerreiro-Tanomaru JM, Bonetti-Filho I, Faria G.
AI summary — for doctors, generated from the abstract only
Combining sodium hypochlorite with acid solutions did not increase its penetration into root dentin in a bovine tooth model.
What was studied
An ex vivo study of bovine incisor root fragments immersed in 2.5% NaOCl alone or with 17% EDTA, 1% citric acid or 1% peracetic acid, measuring dentin penetration depth.
Key findings
- NaOCl with EDTA showed less penetration than NaOCl alone
- Other comparisons: specific statistic not fully captured in the abstract
- Acid combinations did not increase NaOCl penetration
Clinical relevance
Laboratory data on irrigant behaviour; clinical relevance is indirect.
Who should care
Limitations
Small ex vivo bovine model with 9 specimens per group.
Adding acids did not help sodium hypochlorite penetrate deeper into dentin.
This is an AI-generated summary of the published abstract, not a clinical recommendation. It may not reflect the full text or subsequent updates — verify against the original source before acting on it.
Abstract
Objective
The objective of this study was to evaluate the penetration of 2.5% NaOCl associated with 17.0% EDTA, 1.0% citric acid, and 1.0% peracetic acid into dentin tubules.
Study design
The roots of 44 bovine incisors were cross-sectioned and 5-mm-long fragments were produced from their middle thirds. The specimens were instrumented with ProTaper hand files, stained in crystal violet, then sectioned mesiodistally. The buccal fragments were divided into 4 groups (n = 9) and subjected to 2 consecutive 10-minute immersion periods in one of the following acid solutions combined with 2.5% NaOCl: 17.0% EDTA (group 1), 1.0% citric acid (group 2), and 1.0% peracetic acid (group 3). Nine fragments were immersed in 2.5% NaOCl (group 4). The analysis of the penetration of NaOCl solutions into dentin was performed by measuring the depth of crystal violet stain that was bleached using a steromicroscope under ×50 magnification. Statistical comparisons were carried out by Kruskal-Wallis and Dunn's tests at the 5% significance level.
Results
Group 1 showed less penetration into dentin than group 4 (P .05).
Conclusions
Association of NaOCl with acid solutions did not increase its penetration depth into root dentin.
DOI
10.1016/j.tripleo.2011.05.040
PMID
22018593
Research metadata (titles, abstracts, authors, publication dates) is sourced from Europe PMC, which aggregates content from PubMed/MEDLINE, PubMed Central, and other providers under the U.S. National Library of Medicine (NLM/NCBI). NLM does not claim copyright on abstracts; the original journal publishers or authors may hold rights to the full articles. AI-generated summaries are derived only from the abstract, never the full text, and are always labeled as AI-generated.
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