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

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

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

2014 ◽  
Vol 08 (02) ◽  
pp. 154-159 ◽  
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.

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

RSBO ◽  
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.

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

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.

Symmetry of Root and Root Canal Morphology of Maxillary and Mandibular Molars in a White Population: A Cone-beam Computed Tomography Study In Vivo

2013 ◽  
Vol 39 (12) ◽  
pp. 1545-1548 ◽  
Author(s):  
Gianluca Plotino ◽  
Luigi Tocci ◽  
Nicola M. Grande ◽  
Luca Testarelli ◽  
Daniela Messineo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Cone Beam ◽  
White Population ◽  
Mandibular Molars ◽  
Root Canal Morphology ◽  
Canal Morphology

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

2010 ◽  
Vol 21 (6) ◽  
pp. 543-549 ◽  
Author(s):  
Ana Helena Gonçalves de Alencar ◽  
Paul M. H Dummer ◽  
Henrique César Marçal Oliveira ◽  
Jesus Djalma Pécora ◽  
Carlos Estrela
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Dental Students ◽  
Cone Beam ◽  
Undergraduate Teaching ◽  
Root Canal Preparation ◽  
Imaging Methods ◽  
Mandibular Molars ◽  
Niti Instruments

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.

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

2017 ◽  
Vol 11 (1) ◽  
pp. 360-366 ◽  
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.

Evaluation of Root Canal Configuration of Mandibular Molars in a Brazilian Population by Using Cone-beam Computed Tomography: An In Vivo Study

2013 ◽  
Vol 39 (7) ◽  
pp. 849-852 ◽  
Author(s):  
Emmanuel João Nogueira Leal Silva ◽  
Yuri Nejaim ◽  
Amaro V. Silva ◽  
Francisco Haiter-Neto ◽  
Nestor Cohenca
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Brazilian Population ◽  
In Vivo Study ◽  
Cone Beam ◽  
Mandibular Molars

scholarly journals Cone-beam computed tomography study of tooth root and canal morphology of permanent molars in a Serbian population

2020 ◽  
Vol 77 (5) ◽  
pp. 470-478
Author(s):  
Milica Popovic ◽  
Suzana Zivanovic ◽  
Tamara Vucicevic ◽  
Miona Grujovic ◽  
Milos Papic
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Cone Beam ◽  
Type I ◽  
Second Molar ◽  
Mandibular Molars ◽  
Permanent Molars ◽  
Root Canal Morphology ◽  
Canal Morphology

Background/Aim. For successful endodontic therapy, it is necessary to know root morphology. Therefore, the aim of our study was to analyze root canal morphology and root canal length of permanent molars in a Serbian population, using cone-beam computed tomography (CBCT). Methods. The study included a total of 305 maxillary molars, and 280 mandibular molars receiving cone-beam computed tomography examination and determined root numbers, canal morphology according to Vertucci classification, and canal lengths. Results were correlated with sex and tooth location in the jaw. Results. The mesiobuccal roots of first maxillary molars showed Vertucci type I in 45.7%, followed by type II in 29% of cases. For the second molar, Vertucci type I was found in 60.5% of cases in mesiobuccal canals. Palatal and distobuccal canals mostly presented Vertucci type I configuration. The mesial roots of mandibular molars had the highest frequency of two canals with Vertucci type IV as the most frequent for the first molar, and Vertucci type II for the second molar. Distal roots most commonly had one canal in both molars. Palatal canal length was the highest in maxillary first molars, with the mean value of 20.62 mm, while in second molars, the highest length value was for the mesiobuccal canal (20.09 mm). In both mandibular molars the mesial root canal was the longest one. Differences were found according to sex and tooth location in the jaw. Conclusion. Mesiobuccal roots of maxillary first molars had two canals; it was more frequently compared to second molars. Mesial roots of mandibular molars showed same frequency of two canals, and diversity in Vertucci types. Male patients tended to have higher complexity of root canal morphology compared to that of females. CBCT can improve understanding of the root canal morphology.

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