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.

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

2020 ◽  
Author(s):  
Shuaimei Xu ◽  
Junfeng Dao ◽  
Zhongjun Liu ◽  
Zhiyong Zhang ◽  
Yu Lu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Chinese Population ◽  
Average Length ◽  
High Rate ◽  
Cone Beam ◽  
Chinese Populations ◽  
Computed Tomography Images ◽  
Partial Communication ◽  
Correlated Factors

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. Presence of isthmuses and MM canals, and the length of isthmuses in the mesial root were recorded. Meanwhile, we also recorded possible correlated factors such as demographics, side of mandible, presence of separated distal-lingual roots. Results: Of these 357 teeth, 209 showed evidence of either complete or partial communication in the mesial root. Of these, 11(3.1%) exhibited true MM canals while 198(55.5%) exhibited isthmuses. Sex or side of mandible was not correlated with the prevalence of isthmuses (P> 0.05). However, there was a significant association between the presence of a distal-lingual root and the prevalence of such communication (P< 0.001). The average length of isthmuses was 4.3 ± 3.1mm. Conclusions: We detected high rate of isthmuses and low rate of MM canals in mesial roots of mandibular first molars, which is important as such areas should be identified and cleaned during root canal treatment.

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

2020 ◽  
Author(s):  
Shuaimei Xu ◽  
Junfeng Dao ◽  
Zhongjun Liu ◽  
Zhiyong Zhang ◽  
Yu Lu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Chinese Population ◽  
Average Length ◽  
High Rate ◽  
Cone Beam ◽  
Chinese Populations ◽  
Computed Tomography Images ◽  
Partial Communication ◽  
Correlated Factors

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. Presence of isthmuses and MM canals , and the length of isthmuses in the mesial root were recorded. Meanwhile, we also recorded possible correlated factors such as demographics, side of mandible, presence of separated distal-lingual roots. `` Results : Of these 357 teeth, 209 showed evidence of either complete or partial communication in the mesial root. Of these, 11(3.1%) exhibited true MM canals while 198(55.5%) exhibited isthmuses. Sex or side of mandible was not correlated with the prevalence of isthmuses ( P > 0.05) . However, there was a significant association between the presence of a distal-lingual root and the prevalence of such communication ( P < 0.001). The average length of isthmuses was 4.3 ± 3.1mm. Conclusions : We detected high rate of isthmuses and low rate of MM canals in mesial roots of mandibular first molars, which is important as such areas should be identified and cleaned during root canal treatment.

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 ◽  
Chinese Population ◽  
Average Length ◽  
High Rate ◽  
Cone Beam ◽  
Chinese Populations ◽  
Computed Tomography Images ◽  
Partial Communication ◽  
Correlated Factors

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. Presence of isthmuses and MM canals, and the length of isthmuses in the mesial root were recorded. Meanwhile, we also recorded possible correlated factors such as demographics, side of mandible, presence of separated distal-lingual roots. 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 prevalence 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 prevalence of such communication (P< 0.05). The average length of isthmuses was 4.3 ± 3.1mm. Conclusions: We detected high rate of isthmuses and low rate of MM canals in mesial roots of mandibular first molars, which is important as such areas should be identified and cleaned during root canal treatment.

scholarly journals Root and canal morphology of maxillary second molars by cone-beam computed tomography in a native Chinese population

2017 ◽  
Vol 45 (2) ◽  
pp. 830-842 ◽  
Author(s):  
Daming Wu ◽  
Guangdong Zhang ◽  
Ruizhen Liang ◽  
Guangchao Zhou ◽  
Younong Wu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Chinese Population ◽  
Bilateral Symmetry ◽  
Cone Beam ◽  
Men And Women ◽  
Computed Tomography Images ◽  
Root Canal Morphology ◽  
Canal Morphology

Objective To evaluate the root and root canal morphology of the maxillary second molars (MSMs) in a native Chinese population by cone-beam computed tomography. Methods Cone-beam computed tomography images of 2412 MSMs from 1294 Chinese patients were analyzed to determine the number and morphology of the roots, the root canal morphology, the bilateral symmetry, and the correlations of these parameters with sex and age. Results The percentage of fused roots increased with age, while the percentage of fused roots in women was higher than that in men. The percentage of second mesiobuccal (MB2) canals in MSMs with three separate roots was higher in men than women. Patients aged 31 to 40 years showed a higher prevalence of MB2 canals, while those aged ≥51 years showed the lowest prevalence of MB2 canals among both men and women. There was a significant difference in bilateral symmetry of MSMs between men and women. Conclusion Root fusion of MSMs increased with age, while the root canal morphology was more complex in patients of intermediate ages.

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.

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

Root canal sealers affect artifacts on cone-beam computed tomography images

Odontology ◽  
2021 ◽  
Author(s):  
Hazuki Miyashita ◽  
Rieko Asaumi ◽  
Ayaka Sakamoto ◽  
Taisuke Kawai ◽  
Masaru Igarashi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Cone Beam ◽  
Computed Tomography Images ◽  
Root Canal Sealers
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