Title: Effect of two different calcium hydroxide paste removal techniques on apical leakage: an electrochemical study
Abstract: This study evaluated the effect of two different calcium hydroxide (Ca(OH)2) paste removal techniques on the apical leakage of canals obturated with gutta percha cones and sealer after removing a Ca(OH)2 dress- ing using an electrochemical method. Seventy extracted single-rooted teeth were instrumented on with Profile rotary files under NaOCl irriga- tion. Fifty-eight canals were filled with calcium hydroxide paste, which was then removed using one of the following two techniques. In group A, calcium hydroxide was removed using only NaOCl irrigation, and in group B, the canals were re-prepared with a Profile rotary files-one size larger than the previous instru- ment and were irrigated with NaOCl. In both groups, the root surfaces were coated twice with nail varnish from CEJ to an area 4 ㎜ away from the apex after canal obturation. Apical leakage was measured using an electrochemical method for 24 days. All the specimens showed leakage that increased markedly in the first three days. There was no signifi- cant difference between the two groups (p > 0.05). The effect of two calcium hydroxide paste removal tech- niques on the apical leakage was not different during a short period.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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