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 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 ◽  
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 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.

Analysis of the Root and Canal Morphologies in Maxillary First and Second Molars in a Chinese Population Using Cone-beam Computed Tomography

2016 ◽  
Vol 42 (5) ◽  
pp. 696-701 ◽  
Author(s):  
Xiao-mei Tian ◽  
Xiang-wen Yang ◽  
Liang Qian ◽  
Bin Wei ◽  
Yao Gong
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Chinese Population ◽  
Cone Beam

Implant treatment planning regarding augmentation procedures: panoramic radiographs vs. cone beam computed tomography images

2015 ◽  
Vol 27 (8) ◽  
pp. 1010-1016 ◽  
Author(s):  
Dorothea C. Dagassan-Berndt ◽  
Nicola U. Zitzmann ◽  
Clemens Walter ◽  
Ralf K. W. Schulze
Keyword(s):  
Computed Tomography ◽  
Treatment Planning ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Panoramic Radiographs ◽  
Computed Tomography Images ◽  
Implant Treatment
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