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

Abstract Background A knowledge regarding anatomical variants is important to achieve success in endodontic treatment. Root canal treatment of mandibular first premolars (PM1s) is challenging due to the existence of numerous variations in canal configurations, including a C-shaped variant. We aim to determine the prevalence and morphologic characteristics of non-single canals of mandibular first (PM1s) and second (PM2s) premolars in a Korean population using cone beam computed tomography (CBCT) and to evaluate correlations between non-single canals of PM1s and other anatomical variants, such as distolingual roots (DLRs) in mandibular first molars (M1s) and C-shaped canals in mandibular second molars (M2s). Methods A total of 971 PM1s and 997 PM2s from 500 patients were examined in vivo by CBCT. Root canal configurations and C-shaped canals were determined in accordance with the Vertucci classification and Fan classification, respectively. The correlation between non-single canals in PM1s and DLRs in M1s was evaluated using logistic regression analysis. Results PM2s typically had one root (99.89%) with one canal (98.4%). Among PM1s with non-single canals (21.2%), Vertucci type V (10.9%) and C-shaped (3.7%) canals were prevalent. Among C-shaped PM1 canals, the majority were Vertucci type V (77.8%); a C-shaped configuration (C2) was predominant mostly at the middle and/or apical third of the root. After adjusting for other variables (i.e., sex, age, and side), C-shaped canals in PM1s was significantly correlated with the presence of DLRs in M1s (odds ratio = 2.616; 95% confidence interval, 1.257–5.443; p = 0.010). Conclusions The presence of C-shaped PM1 canals was positively related to the presence of DLRs in M1s. Although C-shaped canals in PM1s are difficult to distinguish, this finding could aid clinicians in predicting C-shaped canal configurations in PM1s of patients who exhibit DLRs in M1s.

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Symmetry of root and root canal morphology of mandibular incisors: A cone-beam computed tomography study in vivo

Journal of Clinical and Experimental Dentistry ◽

10.4317/jced.55629 ◽

2019 ◽

pp. 0-0 ◽

Cited By ~ 7

Author(s):

F Valenti-Obino ◽

D Di Nardo ◽

L Quero ◽

G Miccoli ◽

G Gambarini ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Cone Beam ◽

Root Canal Morphology ◽

Canal Morphology ◽

Mandibular Incisors

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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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Evaluation of Root Canal Configuration of Maxillary Molars in a Brazilian Population Using Cone-beam Computed Tomographic Imaging: An In Vivo Study

Journal of Endodontics ◽

10.1016/j.joen.2013.10.002 ◽

2014 ◽

Vol 40 (2) ◽

pp. 173-176 ◽

Cited By ~ 48

Author(s):

Emmanuel João Nogueira Leal Silva ◽

Yuri Nejaim ◽

Amaro I.V. Silva ◽

Francisco Haiter-Neto ◽

Alexandre A. Zaia ◽

...

Keyword(s):

Root Canal ◽

Tomographic Imaging ◽

Brazilian Population ◽

In Vivo Study ◽

Cone Beam ◽

Computed Tomographic ◽

Maxillary Molars ◽

Computed Tomographic Imaging

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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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Frequency of non-single canals in mandibular premolars and correlations with other anatomical variants: an in vivo cone beam computed tomography study

10.21203/rs.2.10416/v3 ◽

2019 ◽

Author(s):

Young-Eun Jang ◽

Yemi Kim ◽

Bom Sahn Kim ◽

Sin-Young Kim ◽

Hyung-Jong Kim

Keyword(s):

Computed Tomography ◽

Regression Analysis ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Odds Ratio ◽

Cone Beam ◽

Anatomical Variants ◽

Morphologic Characteristics ◽

Type V

Abstract Background: A knowledge regarding anatomical variants is important to achieve success in endodontic treatment. Root canal treatment of mandibular first premolars (PM1s) is challenging due to the existence of numerous variations in canal configurations, including a C-shaped variant. We aim to determine the frequency and morphologic characteristics of non-single canals of mandibular first (PM1s) and second (PM2s) premolars in a Korean population using cone beam computed tomography (CBCT) and to evaluate correlations between non-single canals of PM1s and other anatomical variants, such as distolingual roots (DLRs) in mandibular first molars (M1s) and C-shaped canals in mandibular second molars (M2s). Methods: A total of 971 PM1s and 997 PM2s from 500 patients were examined in vivo by CBCT. Root canal configurations and C-shaped canals were determined in accordance with the Vertucci classification and Fan classification, respectively. The correlation between non-single canals in PM1s and DLRs in M1s was evaluated using logistic regression analysis. Results: PM2s typically had one root (99.89%) with one canal (98.4%). Among PM1s with non-single canals (21.2%), Vertucci type V (10.9%) and C-shaped (3.7%) canals were prevalent. Among C-shaped PM1 canals, the majority were Vertucci type V (77.8%); a C-shaped configuration (C2) was predominant mostly at the middle and/or apical third of the root. After adjusting for other variables (i.e., sex, age, and side), C-shaped canals in PM1s was significantly correlated with the presence of DLRs in M1s (odds ratio = 2.616; 95% confidence interval, 1.257–5.443; p = 0.010). Conclusions: The presence of C-shaped PM1 canals was positively related to the presence of DLRs in M1s. Although C-shaped canals in PM1s are difficult to distinguish, this finding could aid clinicians in predicting C-shaped canal configurations in PM1s of patients who exhibit DLRs in M1s.

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Frequency of non-single canals in mandibular premolars and correlations with other anatomical variants: an in vivo cone beam computed tomography study

10.21203/rs.2.10416/v5 ◽

2019 ◽

Author(s):

Young-Eun Jang ◽

Yemi Kim ◽

Bom Sahn Kim ◽

Sin-Young Kim ◽

Hyung-Jong Kim

Keyword(s):

Computed Tomography ◽

Regression Analysis ◽

Cone Beam Computed Tomography ◽

Root Canal ◽

Odds Ratio ◽

Cone Beam ◽

Anatomical Variants ◽

Morphologic Characteristics ◽

Type V

Abstract Abstract Background: A knowledge regarding anatomical variants is important to achieve success in endodontic treatment. Root canal treatment of mandibular first premolars (PM1s) is challenging due to the existence of numerous variations in canal configurations, including a C-shaped variant. We aim to determine the frequency and morphologic characteristics of non-single canals of mandibular first (PM1s) and second (PM2s) premolars in a Korean population using cone beam computed tomography (CBCT) and to evaluate correlations between non-single canals of PM1s and other anatomical variants, such as distolingual roots (DLRs) in mandibular first molars (M1s) and C-shaped canals in mandibular second molars (M2s). Methods: A total of 971 PM1s and 997 PM2s from 500 patients were examined in vivo by CBCT. Root canal configurations and C-shaped canals were determined in accordance with the Vertucci classification and Fan classification, respectively. The correlation between non-single canals in PM1s and DLRs in M1s was evaluated using logistic regression analysis. Results: PM2s typically had one root (99.89%) with one canal (98.4%). Among PM1s with non-single canals (21.2%), Vertucci type V (10.9%) and C-shaped (3.7%) canals were prevalent. Among C-shaped PM1 canals, the majority were Vertucci type V (77.8%); a C-shaped configuration (C2) was predominant mostly at the middle and/or apical third of the root. After adjusting for other variables (i.e., sex, age, and side), C-shaped canals in PM1s was significantly correlated with the presence of DLRs in M1s (odds ratio = 2.616; 95% confidence interval, 1.257–5.443; p = 0.010). Conclusions: The presence of C-shaped PM1 canals was positively related to the presence of DLRs in M1s. Although C-shaped canals in PM1s are difficult to distinguish, this finding could aid clinicians in predicting C-shaped canal configurations in PM1s of patients who exhibit DLRs in M1s.

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