Efficacy of Multiple Rotary File Systems in Retreatment of Oval-shaped Root Canals in Mandibular Molars: A Cone-Beam Computed Tomography Study

The aim of this study was to analyze the root canal anatomy variations of permanent mandibular molars using three different cone-beam computed tomography (CBCT) protocols. Material and methods: Thirty-five freshly extracted first and second mandibular molars were collected and subjected to three CBCT protocols: i-CAT Classic (ICC); i-CAT Next Generation (ICN), and PreXion 3D (PXD). Images were evaluated by two previously calibrated and experienced endodontists. The morphological root canal configurations were classified according to Vertucci. Data were analyzed for frequency, and the binomial and Kappa tests were then performed (α = 0.05). Results: ICC and ICN were able to diagnose a higher percentage of anatomical variations in the mesial roots. In this same root, Vertucci’s type V was the most prevalent, and in distal was the type I. In comparisons of CBCT techniques for agreement, significant differences in the mesial root canals were found in the following: ICC versus (vs) ICN; ICC vs PXD; and ICN vs PXD (p <0.001). However, there were no statistical differences in the distal root canals (p >0.05). The level of agreement in mesial roots was poor or absent, while in distal was moderate.

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Cone beam computed tomography assessment of canal transportation, centering ability, and radius change of two single file systems in curved root canals

Egyptian Dental Journal ◽

10.21608/edj.2019.72654 ◽

2019 ◽

Vol 65 (3) ◽

pp. 2739-2747

Author(s):

Fahd Hadhoud

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

File Systems ◽

Cone Beam ◽

Root Canals ◽

Single File ◽

Canal Transportation ◽

Curved Root Canals

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Assessment of the number of root canals in the maxillary and mandibular molars: A radiographic study using cone beam computed tomography

Journal of Conservative Dentistry ◽

10.4103/jcd.jcd_73_17 ◽

2017 ◽

Vol 20 (5) ◽

pp. 288 ◽

Cited By ~ 5

Author(s):

RoopashriRajesh Kashyap ◽

PrasannaKumar Rao ◽

SiriParvathi Beedubail ◽

Raghavendra Kini

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Radiographic Study ◽

Root Canals ◽

Mandibular Molars

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Evaluation of Distolingual Canal/Roots in Mandibular Molars and Mesiobuccal Canals in Maxillary Molars by CBCT

The Open Dentistry Journal ◽

10.2174/1874210601711010360 ◽

2017 ◽

Vol 11 (1) ◽

pp. 360-366 ◽

Cited By ~ 5

Author(s):

Filiz Namdar Pekiner ◽

M. Oğuz Borahan ◽

Asım Dumlu

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Root Canal Treatment ◽

Cone Beam ◽

Patient Age ◽

Root Canals ◽

Mandibular Molars ◽

Maxillary Molars ◽

Distolingual Canal

Background/Purpose: The objectives of this study were to identify the bilateral distolingual (DL) canals / roots of the mandibular first molars and second mesiobuccal (MB2) canals of the maxillary first molars in the same Turkish individuals using cone-beam computed tomography (CBCT). Materials and Methods: A total of 150 CBCT images including all mandibular and maxillary first molars were retrospectively investigated in a Turkish subpopulation. The patient age, sex and presence of roots and root canals were assessed. The frequency, of bilateral DL canals, DL roots, and MB2 canals were reviewed. Data were analyzed using Fisher’sexact test and Chi-square test. Results: The prevalences of right DL canals, DL roots and MB2 canals were 31.3, 14.0 and 34.7%, respectively. The prevalences of left DL canals, DL roots and MB2 canals were 31.3, 4 and 27.3%, respectively. There was no statistically difference in the frequency of right and left DL canals, DL roots of mandibular first molars and MB2 canals of maxillary first molars according to gender. Conclusion: CBCT is a competent tool for the detection of additional distolingual canals/roots and second mesio buccal canals, and it is a valuable aid for dentists providing root canal treatment.

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Comparison of Canal Transportation, Centering Ratio by Cone-beam Computed Tomography after Preparation with Different File Systems

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1690 ◽

2015 ◽

Vol 16 (5) ◽

pp. 360-365 ◽

Cited By ~ 2

Author(s):

Sevinç Aktemur Türker ◽

Emel Uzunoglu

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

File Systems ◽

Cone Beam ◽

Friedman Test ◽

Root Canals ◽

Computed Tomographic ◽

Apical Transportation ◽

Significant Difference ◽

Canal Transportation

ABSTRACT Aim One Shape Apical 1 (OSA 1) is a new file for preparing the apical aspect of the root canal after One Shape (OS, Micro Mega, Besançon, France). This study compared apical transportation and centering ratios in curved root canals, which were instrumented with ProTaper Next (PTN, Dentsply Tulsa Dental Specialties, Tulsa, OK) up to size X3 and with OS up to OSA 1. Materials and methods Forty-eight mesial canals of mandibular molars were assigned into two groups (n = 24) with respect to canal length and curvature. Root canals were accessed conventionally and preperation was completed with PTN files up to X3 or with OS up to OSA 1 according to the manufacturer's protocols. Apical transportation was assessed pre- and postinstrumentation using cone-beam computed tomographic (CBCT) scans of 1, 2, 3, 4, and 5 mm sections. A Friedman test was performed to assess the significance between file systems. Results No significant difference was found between the file systems regarding apical transportation and centering ratio values (p > 0.05). Transportation in the mesial direction was greater than the distal transportation for both file systems. Conclusion Considering apical transportation and centering ratio in curved canals, two systems provided similar results. Clinical significance Preparation up to One Shape Apical 1 or ProTaper Next X3 was shown similar results regarding apical transportation and centering ratio. Both systems were safe to use in curved molar root canals. How to cite this article Uzunoglu E, Turker SA. Comparison of Canal Transportation, Centering Ratio by Cone-beam Computed Tomography after Preparation with Different File Systems. J Contemp Dent Pract 2015;16(5):360-365.

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