Procedural errors during root canal preparation using rotary NiTi instruments detected by periapical radiography and cone beam computed tomography

This study detected procedural errors created by rotary nickel-titanium (NiTi) instruments during root canal preparation by two imaging methods. Forty extracted human maxillary and mandibular molars were divided randomly into two groups and treated by two endodontists (n=10) and two undergraduate dental students (n=10). The ProTaper UniversalTM Rotary System was used to shape the canals and then they were filled using AH PlusTM sealer and gutta-percha. Periapical radiographs (PR) and cone beam computed tomography (CBCT) images were obtained and two examiners, who evaluated them to verify the occurrence of procedural errors (fractured instruments, perforations, and canal transportation). The Chi-square test at 0.05 level of significance was used for statistical analyses. There were no significant differences (p>0.05) between the imaging methods. In the analysis of procedural errors, there was no significant difference (p>0.05) between the groups of operators (endodontists vs. students) nor between tooth groups (maxillary molars vs. mandibular molars). In view of the low incidence of procedural errors during root canal preparation performed by students the introduction of rotary NiTi instruments has potential in undergraduate teaching. PR and CBCT permitted the detection of procedural errors, but the CBCT images offer more recourse for diagnosis.

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Evaluation of the root and canal morphology of mandibular permanent molars in a south-eastern Turkish population using cone-beam computed tomography

European Journal of Dentistry ◽

10.4103/1305-7456.130584 ◽

2014 ◽

Vol 08 (02) ◽

pp. 154-159 ◽

Cited By ~ 14

Author(s):

Bilge Gulsum Nur ◽

Evren Ok ◽

Mustafa Altunsoy ◽

Osman Sami Aglarci ◽

Mehmet Colak ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Turkish Population ◽

Cone Beam ◽

Type I ◽

Second Molar ◽

Mandibular Molars ◽

Permanent Molars ◽

Canal Morphology

ABSTRACT Objective: The aim of this retrospective study was to determine the root and canal morphology of the mandibular first and second permanent molars in a Turkish population using cone-beam computed tomography (CBCT). Materials and Methods: CBCT images of mandibular first (n = 966) and second molar (n = 1165) teeth from 850 Turkish patients were evaluated. The root canal configurations were classified according to the method of Vertucci. The data were analyzed by Pearson's Chi-square test. Results: The majority of mandibular molars were two rooted with three canals; however, three roots were identified in 0.05% of the first molars and 0.01% of the second molars, and 100% of the additional root canals were of type I configuration. Mesial roots had more complex canal systems with more than one canal, whereas most distal roots had a type I configuration. Conclusions: Within the limitations of this study, it can be concluded that CBCT scanning provides supplemental information about the root canal configurations of mandibular molars in a Turkish population. This study may help clinicians in the root canal treatment of mandibular molars.

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Analysis of the internal anatomy of mandibular molars using different cone-beam computed tomography protocols

RSBO ◽

10.21726/rsbo.v17i1.275 ◽

2020 ◽

Vol 17 (1) ◽

pp. 12-20

Author(s):

Flares Baratto-Filho ◽

Nathaly Dias Morais ◽

Kauhanna Vianna de Oliveira ◽

Flávia Sens Fagundes Tomazinho ◽

Carla Castiglia Gonzaga ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Anatomical Variations ◽

Cone Beam ◽

Type I ◽

Root Canals ◽

Mandibular Molars ◽

Type V ◽

Level Of Agreement

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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C-shaped canals in mandibular molars of a Brazilian subpopulation: prevalence and root canal configuration using cone-beam computed tomography

Clinical Oral Investigations ◽

10.1007/s00784-020-03207-6 ◽

2020 ◽

Vol 24 (9) ◽

pp. 3299-3305

Author(s):

Yuri Nejaim ◽

Amanda Farias Gomes ◽

Lucas de Paula Lopes Rosado ◽

Deborah Queiroz Freitas ◽

Jorge N. R. Martins ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Cone Beam ◽

Mandibular Molars

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A Comparison of Cone Beam Computed Tomography and Periapical Digital Radiography for Evaluation of Root Canal Preparation

Applied Sciences ◽

10.3390/app11146599 ◽

2021 ◽

Vol 11 (14) ◽

pp. 6599

Author(s):

Khoa Van Pham

Keyword(s):

Computed Tomography ◽

Digital Radiography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Cone Beam ◽

Root Canal Preparation ◽

Radiographic Images ◽

Digital Radiograph ◽

Working Length ◽

Before And After

The aim of the present study is to compare cone beam computed tomography and periapical digital radiography for the evaluation of root canal preparation. Nine extracted human molars were used in this study. Following access cavity preparation, mesio-buccal roots of maxillary and mesial roots of mandibular molars were prepared and the remaining roots were cut off. Three amalgam cavities were prepared on the coronal part of the teeth and were filled with amalgam to be used as landmarks. Specimens were scanned using cone-beam computed tomography and periapical digital radiograph images were obtained before and after root canal preparation. WaveOne Gold Primary was used for root canal preparation to full working length. Specimens were then scanned using CBCT and a periapical radiograph for the after-instrumentation images. The transportation and centering ratio were measured and calculated on the CBCT and periapical radiographic images. The Bland–Altman method was used for detecting the bias in the evaluation of agreement between the two methods’ measurements. There was agreement between the two methods’ measurements using CBCT scans and periapical digital radiographic images in the evaluation of transportation and centering ratio parameters. The two methods could be used interchangeably in measurements of transportation and calculating the centering ratio.

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Analysis of Apical Transportation and Canal Centering Ability During Root Canal Preparation by Using Cone-Beam Computed Tomography (in Vitro Study)

Sulaimani dental journal ◽

10.17656/sdj.10081 ◽

2018 ◽

Vol 5 (2) ◽

pp. 29-38

Author(s):

Khelan M. Amin ◽

◽

Bestoon M. Faraj ◽

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

In Vitro Study ◽

Vitro Study ◽

Cone Beam ◽

Root Canal Preparation ◽

Apical Transportation

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Cone-beam Computed Tomography Investigation of Middle Mesial Canals and Isthmuses in Mandibular First Molars in a Chinese Population

10.21203/rs.2.9841/v1 ◽

2019 ◽

Author(s):

Shuaimei Xu ◽

Junfeng Dao ◽

Zhongjun Liu ◽

Zhiyong Zhang ◽

Yu Lu ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Chinese Population ◽

Average Length ◽

Cone Beam ◽

Chinese Populations ◽

Mandibular Molars ◽

Computed Tomography Images ◽

Partial Communication

Abstract Background While there is ample research into the anatomy of mandibular molars, little is known regarding isthmuses and middle mesial (MM) canals in Chinese populations. The goal of this study was to determine the prevalence of MM canals and isthmuses in the mesial root of mandibular first molars using Cone-beam Computed Tomography. Methods Cone-beam Computed Tomography images of 357 mature mandibular first molars were retrospectively analyzed. Data regarding demographics, side of mandible, presence of separated distal-lingual roots, presence of isthmuses and MM canals, and the length of isthmuses in the mesial root were recorded. Results Of these 357 teeth, 209 showed evidence of either complete or partial communication in the mesial root. Of these, 11(3.08%) exhibited true MM canals while 198(55.46%) exhibited isthmuses. Sex or side of mandible was not correlated with the incidence of communication (isthmuses or MM canals) (P> 0.05). However, there was a significant association between the presence of a distal-lingual root and the incidence of such communication (P< 0.05). The average length of isthmuses was 4.26 ± 3.14mm. Conclusions We detected high rates of mandibular molars with isthmuses, which is important as such areas should be identified and cleaned during root canal treatment.

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