Effects of various irrigation/aspiration protocols on cleaning of flattened root canals
Braz. oral res. (Online)
;
29(1): 1-9, 2015. tab, ilus
Article
in English
| LILACS
| ID: lil-777212
ABSTRACT
This study aimed to evaluate, by means of scanning electron microscopy (SEM), the cleaning of flattened root canals, varying irrigation/aspiration protocols during biomechanical preparation. Thirdy human mandibular incisors were distributed into three groups (n = 10) according to the aspiration/irrigation protocols conventional, conventional + brush, and apical negative pressure irrigation. Irrigation procedure was performed with 5 mL of 1% NaOCl at each change of instrument; final irrigation was conducted with 17% EDTA for 5 min. After biomechanical preparation, the roots were sectioned and prepared for SEM analysis. The images obtained were evaluated under 35× and 1,000× magnification by three calibrated examiners, following a double-blind design. All data were analyzed using Kruskal–Wallis and Dunn’s post hoctests (α = 0.05). Canals wherein the conventional method and apical negative pressure irrigation were employed revealed less debris, statistically different from the conventional + brush group (p < 0.05). Regarding the presence of smears, apical negative pressure irrigation was more effective in cleaning, showing lowest scores (p < 0.05), compared with the other tested protocols. Comparing each root canal third revealed that the apical portion was difficult to clean as all the tested protocols showed similar high scores (p > 0.05), both for the presence of debris and smear layer. In conclusion, although none of the studied irrigation/aspiration protocols have completely cleaned flattened root canals, apical negative pressure irrigation was more effective in smear layer removal, whereas the conventional + brush protocol was the least effective in removing the debris and smear layer.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Root Canal Irrigants
/
Root Canal Preparation
/
Dental Pulp Cavity
Type of study:
Controlled clinical trial
/
Evaluation studies
Limits:
Humans
Language:
English
Journal:
Braz. oral res. (Online)
Journal subject:
Dentistry
Year:
2015
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de Ribeirão Preto/BR
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