Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
Vol. 11, No. 2, 2012, pp. 84-87
Bioline Code: os12017
Full paper language: English
Document type: Research Article
Document available free of charge
Brazilian Journal of Oral Sciences, Vol. 11, No. 2, 2012, pp. 84-87
© Copyright 2012 Braz J Oral Sci.
A methodology to standardize the evaluation of root canal instrumentation using cone beam computed tomography|
Flores, Cláudia Bohrer; Machado, Patrícia; Montagner, Francisco; Gomes, Brenda Paula Figueiredo de Almeida; Dotto, Gustavo Nogara & Schmitz, Marcia da Silva
The evaluation of root canal instrumentation is important to observe the action of endodontic instruments
in the root canal walls.
Aim: This study introduces a method to standardize the acquisition of images
before and after preparing root canals by using cone-beam computed tomography (CBCT).
Sixteen mandibular molars were included in acrylic resin blocks. Samples were inserted in a stable
wood box, which was filled with plaster and served as a guide to reinsert the samples. The apparatus
was used for the CBCT examination before and after cervical flaring of root canals. The software
IcatVision® was used to equalize the images before and after instrumentation with two computers
operating at the same time. The measurements between root canal center and the furcation area
were determined. The statistical analysis was performed using the t-test for paired samples (á=0.05).
Results: The values for dentin thickness in the risk zone before and after root canal flaring with
Gates-Gliden drills were 1.096 (± 0.27) mm and 0.742 (± 0.24) (p<0.01), respectively.
The proposed method assures the same positioning of the samples before and after root canal
preparation. It is extremely important, as any mesiodistal or buccolingual movement can produce
a different topogram for comparison procedures.
cone-beam computed tomography, anatomy cross-sectional, image processing computer-assisted, endodontics
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