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The use of ultrasound for the removal of the smear layer. The effect of sodium hypochlorite concentration; SEM study
Author(s) -
Cameron Jeffrey A.
Publication year - 1988
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/j.1834-7819.1988.tb01313.x
Subject(s) - sodium hypochlorite , smear layer , root canal , ultrasound , hypochlorite , sodium , layer (electronics) , medicine , nuclear chemistry , dentistry , chemistry , materials science , composite material , metallurgy , inorganic chemistry , radiology , organic chemistry
This study was carried out to determine the optimum concentration of sodium hypochlorite activated by ultrasound needed to remove the smear layer from an instrumented root canal wall. The results indicated that under the conditions of this experiment a 4 per cent solution of sodium hypochlorite removed all of the smear layer from all 5 specimens; a 2 per cent solution was almost as effective; 1 per cent or 1/2 per cent solutions were less effective, and water was the least effective. A 2 per cent solution of sodium hypochlorite activated by ultrasound would appear to be the optimum concentration for the production of a smear free root canal wall under clinical conditions.