Assessing apical transportation in curved canals: comparison between cross-sections and micro-computed tomography
The aim of this study was to compare two methods of assessing apical transportation in curved canals after rotary instrumentation, namely, cross-sections and micro-computed tomography (µCT). Thirty mandibular molars were divided into two groups and prepared according to the requirements of each method. In G1 (cross-sections), teeth were embedded in resin blocks and sectioned at 2.0, 3.5, and 5.0 mm from the anatomic apex. Pre- and postoperative sections were photographed and analyzed. In G2 (µCT), teeth were embedded in a rubber-base impression material and scanned before and after instrumentation. Mesiobuccal canals were instrumented with the Twisted File (TF) system (SybronEndo, Orange, USA), and mesiolingual canals, with the EndoSequence (ES) system (Brasseler, Savannah, USA). Images were reconstructed, and sections corresponding to distances 2.0, 3.5, and 5.0 mm from the anatomic apex were selected for comparison. Data were analyzed using Mann-Whitney's test at a 5% significance level. The TF and ES instruments produced little deviation from the root canal center, with no statistical difference between them (P > 0.05). The canal transportation results were significantly lower (0.056 mm) in G2 than in G1 (0.089 mm) (p = 0.0012). The µCT method was superior to the cross-section method, especially in view of its ability to preserve specimens and provide results that are more closely related to clinical situations.
Main Authors: | Freire,Laila Gonzales, Gavini,Giulio, Cunha,Rodrigo Sanches, Santos,Marcelo dos |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Sociedade Brasileira de Pesquisa Odontológica - SBPqO
2012
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000300007 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Cross-Sectional Study of Mandibular Canal Branching in Regions Affected by Dental Inflammation with Cone Beam Computed Tomography
by: de-Castro,Mauricio Augusto Aquino, et al.
Published: (2019) -
Cone-beam computed tomography analysis of the apical third of curved roots after mechanical preparation with different automated systems
by: Oliveira,Cesar Augusto Pereira, et al.
Published: (2009) -
Evaluation of Apical Transportation by Three Rotary Systems in Extracted Teeth with Curved Canals
by: Ortiz-Rocha,Ana Laura, et al.
Published: (2020) -
Variations in the Cross-Sectional Shape of the Apical Thirds of the Root Canals in Maxillary and Mandibular Teeth
by: Arfianti,Rizky Putri, et al.
Published: (2020) -
A comparison of root canal transportation and centering ability between WaveOne® Gold and Protaper Next® files, using micro-computed tomography
by: Gajoum,A, et al.
Published: (2021)