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PubMed · 14661329

[A comparative study of root smear layer removal using different pH EDTA salts].

Rui Ma·Zheng Liu·Cai-lian Zhu
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Abstract

OBJECTIVE: To evaluate the effect of different pH EDTA salts on removing root canal smear layers. METHODS: Sixty human teeth with single root were instrumented using step-back technique, then were irrigated with several irrigating solutions including A: 0.9% saline; B: 5.25% NaOCl +3% H2O2; C: 15% EDTA (pH = 6.5); D: 15% EDTA (pH = 13); E: 15% EDTA (pH = 6.5) 25% NaOCl +3% H2O2; F: 15% EDTA (pH = 13) 25% NaOCl +3% H2O2. After the teeth were split, the root canal walls were examined with scanning electron microscopy at the coronal, middle and apical thirds for smear layer removal. RESULTS: Except A and B group, all the groups were effective on removing smear layer at the coronal, middle thirds of the root canal, group C had a stronger effect to remove smear layer than group D (P < 0.05), group E was the most effective among these groups. However, these groups were all ineffective on removing smear layer at the apical thirds of root canal. CONCLUSIONS: 15% EDTA (pH = 6.5) 25% NaOCl +3% H2O2 was the most effective irrigation on removing smear layer.

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Edetic AcidHumansHydrogen-Ion ConcentrationMicroscopy, Electron, ScanningRoot Canal IrrigantsSmear LayerComparative StudyEnglish AbstractJournal Article

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Rui Ma, Zheng Liu, Cai-lian Zhu. 2003. [A comparative study of root smear layer removal using different pH EDTA salts].. https://pubmed.ncbi.nlm.nih.gov/14661329/

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