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NaOCl and EDTA irrigating solutions for endodontics: SEM findings.

Authors: Franchi, M; Eppinger, F; Filippini, G.F; Montanari, G;

NaOCl and EDTA irrigating solutions for endodontics: SEM findings.

Abstract

Les canaux de la racine dentaire des prémolaires humaines ont été instrumentés manuellement avec files K type et ensuite irrigués avec différentes solutions pour évaluer les conditions de netteté de la surface endodontique.Les canaux irrigués avec une solution saline à 0,9% ou de H2O2 (10 volumes) ont démontré la présence de prédentine ou d’une couche de tissu salie. Cette couche était toujours présente sur la paroi endodontique lavée avec une solution de NaOCl à 5%. Les exemplaires traités avec une solution de EDTA à 0,2% ont démontré une netteté partielle des orifices tubulaires dentinaires et seulement un mince résidu non propre. Les zones non instrumentées de la même racine présentaient au contraire des résidus et une prédentine avec nombreuses bactéries calcifiées. Les canaux irrigués avec une solution de NaOCl et EDTA alternée ont démontré la présence d’une épaisse couche non propre et la visualisation de quelques orifices tubulaires. La surface endodontique des canaux de la racine irriguée avec NaOCl pendant l’instrumentation et ensuite lavée avec EDTA a démontré les images ultrastructurales les plus homogènes: les orifices dentinaires partiellement nettoyés pouvait être visualisés sur toute la surface du canal.

Premolars roots of humans were manually instrumented with K-type files and irrigated with different solutions to evaluate the rate of cleaning of endodontic surface. Root canals irrigated with 0.9% saline solution or H2O2 (10 volumes) showed the presence of predentin and amorphous smear layer. Thick smear layer was always present on endodontic walls rinsed with 5% solution of NaOCl. Specimens treated with 0.2% solution of EDTA showed partially clean dentinal tubules orifices and remnants of a thin smear layer. Occasional uninstrumented areas of the same roots presented smear layer remnants and predentin with calcified bacteriae. The root canals irrigated with NaOCl and EDTA solutions alternated after each instrument showed at the dentin surface thick smear layer: only few dentinal tubules orifices were visible.Endodontic surface of root canals irrigated with NaOCl during instrumentation and finally rinsed with EDTA solutions showed the most homogeneous ultrastructural pictures: partially clean dentinal orifices were detectable in the whole canals.

Keywords

Root Canal Irrigants, Sodium Hypochlorite, Surface Properties, irrigation endodontique, irrigation endodontique; NaOCl; EDTA; SEM, EDTA, Drug Evaluation, Preclinical, endodontic irrigation; NaOCl; EDTA; SEM, In Vitro Techniques, Solutions, SEM, Microscopy, Electron, Scanning, Humans, Bicuspid, NaOCl, endodontic irrigation, Dental Pulp Cavity, Edetic Acid

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Top 10%
Average
Green