Crown-down preflaring in the determination of the first apical file
Braz. oral res
;
24(2): 153-157, Apr.-June 2010. tab, graf
Article
in English
| LILACS
| ID: lil-553914
ABSTRACT
In this study, scanning electron microscopy (SEM) was used to evaluate the adaptation of the first apical file after preflaring in mesiobuccal (MB) and mesiolingual (ML) canals of mandibular molars considering the tactile sensibility as a reference. The mesial canals (n = 22) of human mandibular molar teeth were used, and the first instrument to bind to the working length was determined after preflaring and crown-down shaping. Digital images of the root apex were acquired and a single examiner determined the contact of the file with the walls using Image J software. The results showed that the file was in contact in 47.83 percent and 31.71 percent in the MB and ML canals, respectively. When the apexes are fused, the average was 40.03 percent. A descriptive analysis showed that the first apical file did not touch all dentin walls in any of the samples.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Root Canal Preparation
/
Dental Pulp Cavity
/
Molar
Limits:
Humans
Language:
English
Journal:
Braz. oral res
Journal subject:
Dentistry
Year:
2010
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Federal University of Pelotas/BR
/
Laboratory of Immunology and Microscopy/BR
/
University of São Paulo/BR
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