A Cone-beam Computed Tomographic Study of Apical Surgery–related Morphological Characteristics of the Distolingual Root in 3-rooted Mandibular First Molars in a Chinese Population

2017 ◽  
Vol 43 (12) ◽  
pp. 2020-2024 ◽  
Author(s):  
Xiao Zhang ◽  
Ning Xu ◽  
Hanguo Wang ◽  
Qing Yu
Keyword(s):  
Chinese Population ◽  
Morphological Characteristics ◽  
Cone Beam ◽  
Computed Tomographic ◽  
Apical Surgery ◽  
Distolingual Root

scholarly journals Biometric analysis of apical surgery-related anatomy of mandibular first molars: a cone-beam computed tomography study in a Mongoloid population

2019 ◽  
Vol 48 (4) ◽  
pp. 030006051989239
Author(s):  
Xue Wang ◽  
Yuejiao Zhang ◽  
Xiaolan Li ◽  
Zijing Huang ◽  
Minyi Cui ◽  
...  
Keyword(s):  
Root Apex ◽  
Cone Beam ◽  
Biometric Analysis ◽  
Tomographic Images ◽  
Computed Tomographic ◽  
Apical Surgery ◽  
Surgical Access ◽  
Distolingual Root ◽  
Long Access ◽  
Mongoloid Population

Objective To evaluate the apical surgery-related anatomy of two-rooted and three-rooted mandibular first molars (MFMs) in a Mongoloid population. Methods A total of 502 cone-beam computed tomographic images were used to evaluate the root configuration, the distance from the buccal bone to each root, root dimensions, and the complete root resection distance at the resection level for roots of MFMs. Results The prevalence of two-rooted and three-rooted MFMs was 85.1% and 14.9%, respectively. At the resection level, the distance from the buccal bone to the mesial and distal roots of two-rooted MFMs was 2.24 and 3.15 mm, respectively, while the distance was 2.44, 2.01, and 8.55 mm for the mesial, distobuccal, and distolingual roots of three-rooted MFMs, respectively. The distance from the buccal bone to each root was longer in men than in women. The largest distance for complete root resection was detected for the distal root in two-rooted MFMs and for the distolingual root in three-rooted MFMs. Conclusions The prevalence of three-rooted MFMs is common in the Mongoloid population. The distance from the buccal bone to root apex differs according to root configurations and sex. Surgical access to the distolingual root is difficult because of the long access distance.

Radiographic Assessment of Bone Healing Using Cone-beam Computed Tomographic Scans 1 and 5 Years after Apical Surgery

2019 ◽  
Vol 45 (11) ◽  
pp. 1307-1313 ◽  
Author(s):  
Thomas von Arx ◽  
Simone F.M. Janner ◽  
Stefan Hänni ◽  
Michael M. Bornstein
Keyword(s):  
Bone Healing ◽  
Cone Beam ◽  
Radiographic Assessment ◽  
Computed Tomographic ◽  
Apical Surgery

scholarly journals Prevalence of middle mesial canal and radix entomolaris of mandibular first permanent molars in a western Chinese population: an in vivo cone-beam computed tomographic study

2020 ◽  
Author(s):  
Xin Qiao ◽  
Hualing Zhu ◽  
Yujia Yan ◽  
Jinglin Li ◽  
Jiayin Ren ◽  
...  
Keyword(s):  
Chinese Population ◽  
Bilateral Symmetry ◽  
Cone Beam ◽  
Detection Rates ◽  
Computed Tomographic ◽  
Average Curvature ◽  
Permanent Molars ◽  
Root Canal Morphology ◽  
First Permanent Molars

Abstract Background: The aim of this study was to investigate the prevalence of the middle mesial canal (MMC) and radix entomolaris (RE) in mandibular first permanent molars in a western Chinese population using cone-beam computed tomography (CBCT). Methods: A total of 1174 CBCT images of the mandibular first molars were collected from West China Hospital of Stomatology, Sichuan University. The following information was recorded and evaluated: the detection rate and location of the MMC and RE, the curvature of the RE, the canal configuration and bilateral symmetry. Results: The detection rates of the MMC and RE were 3.41% and 25.04%, respectively, as calculated by individuals, and 1.79% and 22.15%, respectively, as calculated by total teeth. The average curvature in the buccolingual (BL) orientation ( 40.63±14.3 9°) was significantly larger than that in the mesiodistal (MD)orientation ( 17.64±7.8 2°) (p<0.05). Of 587 patients, 71.72% (421/587) had bilateral symmetry according to the root canal morphology. The incidence of three-rooted mandibular first molars was higher in males than in females, while the incidence of two-rooted mandibular first molars was higher in females than in males. Conclusions: Our results showed that the RE could be detected in almost 1/4 of the western Chinese population; thus, RE detection requires special attention and careful assessment in endodontic treatment.

Changes of Periodontal Parameters after Apical Surgery: Correlation of Clinical and Cone-beam Computed Tomographic Data

2017 ◽  
Vol 43 (6) ◽  
pp. 876-884 ◽  
Author(s):  
Thomas von Arx ◽  
Linda Antonini ◽  
Giovanni E. Salvi ◽  
Michael M. Bornstein
Keyword(s):  
Cone Beam ◽  
Computed Tomographic ◽  
Apical Surgery ◽  
Tomographic Data

scholarly journals Prevalence of middle mesial canal and radix entomolaris of mandibular first permanent molars in a western Chinese population: an in vivo cone-beam computed tomographic study

2020 ◽  
Author(s):  
Xin Qiao ◽  
Hualing Zhu ◽  
Yujia Yan ◽  
Jinglin Li ◽  
Jiayin Ren ◽  
...  
Keyword(s):  
Chinese Population ◽  
Bilateral Symmetry ◽  
Cone Beam ◽  
Detection Rates ◽  
Computed Tomographic ◽  
Average Curvature ◽  
Permanent Molars ◽  
Root Canal Morphology ◽  
First Permanent Molars

Abstract Background: The aim of this study was to investigate the prevalence of the middle mesial canal (MMC) and radix entomolaris (RE) in mandibular first permanent molars in a western Chinese population using cone-beam computed tomography (CBCT).Methods: A total of 1174 CBCT images of the mandibular first molars were collected from West China Hospital of Stomatology, Sichuan University. The following information was recorded and evaluated: the detection rate and location of the MMC and RE, the curvature of the RE, the canal configuration and bilateral symmetry.Results: The detection rates of the MMC and RE were 3.41% and 25.04%, respectively, as calculated by individuals, and 1.79% and 22.15%, respectively, as calculated by total teeth. The average curvature in the buccolingual (BL) orientation ( 40.63±14.3 9°) was significantly larger than that in the mesiodistal (MD)orientation ( 17.64±7.8 2°) (p<0.05). Of 587 patients, 71.72% (421/587) had bilateral symmetry according to the root canal morphology. The incidence of three-rooted mandibular first molars was higher in males than in females, while the incidence of two-rooted mandibular first molars was higher in females than in males.Conclusions: Our results showed that the RE could be detected in almost 1/4 of the western Chinese population; thus, RE detection requires special attention and careful assessment in endodontic treatment.

scholarly journals Prevalence of Middle Mesial Canal and Radix Entomolaris of Mandibular First Permanent Molars in a Western Chinese Population: An In Vivo Cone-Beam Computed Tomographic Study

2020 ◽  
Author(s):  
Xin Qiao ◽  
Hualing Zhu ◽  
Yujia Yan ◽  
Jinglin Li ◽  
Jiayin Ren ◽  
...  
Keyword(s):  
Chinese Population ◽  
Bilateral Symmetry ◽  
Cone Beam ◽  
Detection Rates ◽  
Computed Tomographic ◽  
Average Curvature ◽  
Permanent Molars ◽  
Root Canal Morphology ◽  
First Permanent Molars

Abstract Background: The aim of this study was to investigate the prevalence of the middle mesial canal (MMC) and radix entomolaris (RE) in mandibular first permanent molars in a western Chinese population using cone-beam computed tomography (CBCT). Methods: A total of 1174 CBCT images of the mandibular first molars were collected from West China Hospital of Stomatology, Sichuan University. The following information was recorded and evaluated: the detection rate and location of the MMC and RE, the curvature of the RE, the canal configuration and bilateral symmetry. Results: The detection rates of the MMC and RE were 3.41% and 25.04%, respectively, as calculated by individuals, and 1.79% and 22.15%, respectively, as calculated by total teeth. The average curvature in the buccolingual (BL) orientation (40.63±14.39°) was significantly larger than that in the mesiodistal (MD)orientation (17.64±7.82°) (p<0.05). Of 587 patients, 71.72% (421/587) had bilateral symmetry according to the root canal morphology. The incidence of three-rooted mandibular first molars was higher in males than in females, while the incidence of two-rooted mandibular first molars was higher in females than in males. Conclusions: Our results showed that the RE could be detected in almost 1/4 of the western Chinese population; thus, RE detection requires special attention and careful assessment in endodontic treatment.

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