Cone-beam computed tomography classification of the mandibular second molar root morphology and its relationship to panoramic radiographic appearance

2020 ◽  
Author(s):  
Takuma Funakoshi ◽  
Takuya Shibata ◽  
Kyoko Inamoto ◽  
Naoki Shibata ◽  
Yoshiko Ariji ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Morphology ◽  
Cone Beam ◽  
Radiographic Appearance ◽  
Second Molar ◽  
Mandibular Second Molar

scholarly journals Tomographic mapping of buccal shelf area for optimum placement of bone screws: A three-dimensional cone-beam computed tomography evaluation

2019 ◽  
Vol 9 ◽  
pp. 241-245
Author(s):  
Neeraj Eknath Kolge ◽  
Vivek J. Patni ◽  
Sheetal S. Potnis
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Bone Screws ◽  
Neurovascular Bundle ◽  
Cone Beam ◽  
Shelf Area ◽  
Bone Screw ◽  
Second Molar ◽  
Bone Width ◽  
Mandibular Second Molar

Introduction: Buccal shelf bone screws have become increasingly popular as a preferred method of skeletal anchorage in the mandibular arch. Anatomic variations and clinical experience suggest that width and slope of the bone at buccal shelf vary in different population groups, with some individual variations. Aims and Objectives: The objective of this study was to evaluate angulation of the bone screw of mandibular buccal shelf area, total bone width, thickness of the cortical bone, and proximity to neurovascular structures. Materials and Methods: Cone-beam computed tomography scans were used to obtain measurements of the buccal shelf region of 35 patients (18 females, 17 males; mean age, 23.6 years). Measurements were taken at three locations (L1, L2, and L3) and total bone width was measured at two levels from the cementoenamel junction (CEJ, H1 and H2). Bone screws were virtually placed and their proximity evaluated from digitally traced inferior alveolar neurovascular bundle. Results: Permissible angulation for placement of buccal shelf bone screw considering the safety distance from the root and avoiding excessive buccal projection to minimize cheek irritation was found to be 74.48 (SD ± 4.26). Total bone width was maximum at the distobuccal cusp of mandibular second molar (L3H2; 6.40 ± 1.35) when measured at the level of 8 mm from the CEJ. Bone screws were well within the safety range from causing any iatrogenic damage to the inferior alveolar neurovascular bundle at all the three aforementioned locations. Conclusion: Thus, area buccal to the mandibular second molar region seems to be the most favorable site for placement of buccal shelf bone screws in Indian patients.

scholarly journals Identification and Endodontic Management of Middle Mesial Canal in Mandibular Second Molar Using Cone Beam Computed Tomography

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Bonny Paul ◽  
Kavita Dube
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Digital Radiography ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Cone Beam ◽  
Two Dimensional ◽  
Second Molar ◽  
Two Dimensional Image ◽  
Mandibular Second Molar

Endodontic treatments are routinely done with the help of radiographs. However, radiographs represent only a two-dimensional image of an object. Failure to identify aberrant anatomy can lead to endodontic failure. This case report presents the use of three-dimensional imaging with cone beam computed tomography (CBCT) as an adjunct to digital radiography in identification and management of mandibular second molar with three mesial canals.

scholarly journals Prevalence of Root Canal Configuration of Mandibular Second Molar Using Cone-Beam Computed Tomography in a Sample of Iraqi Patients

2021 ◽  
Vol 11 (1) ◽  
pp. 22-26
Author(s):  
Hiwa S. Khidir ◽  
Saud J. Dizayee ◽  
Sangar H. Ali
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Root Resorption ◽  
Cone Beam ◽  
Inclusion Criteria ◽  
Posterior Teeth ◽  
Second Molar ◽  
Significant Difference ◽  
Mandibular Second Molar

Introduction: The purpose of this study was to find out the prevalence of C-shaped canals configurations in mandibular 2nd molar and to investigate the gender prevalence. Materials and Methods: A sample of 1200 patients’ cone beam computed tomography (CBCT) scans were screened and evaluated by a maxillofacial radiologist assessed the axial, sagittal, and coronal sections. Inclusion criteria applied to 801 patients (452 females and 349 male) aged 14–75 years were included in this study with total of 1567 mandibular 2nd molar was evaluated. Inclusion criteria: Available CBCT images of mandibular posterior teeth with at least one mandibular 2nd molar in the scan, absence of root canal treatment, absence of coronal or post coronal restorations, absence of root resorption or periapical lesions, and high-quality images. Canal configuration was classified by criteria’s which described by Fan et al. (2004): (i) Fused roots, (ii) a longitudinal groove on the buccal or lingual surface of the root, and (iii) at least one cross-section of the canal belongs to the C1, C2, or C3 configuration. Results: Considering 801 patients, 97 (12.1%) patients females 57 (7.1%) and 40 (5%) males had a C-shaped canal with no statistical difference between females and males (P > 0.05). Conclusion: The occurrence of C- shaped canal mandibular 2nd molar is approximately 12.1% and no significant difference was found by gender.

Worldwide Prevalence of Mandibular Second Molar C-Shaped Morphologies Evaluated by Cone-Beam Computed Tomography

2017 ◽  
Vol 43 (9) ◽  
pp. 1442-1447 ◽  
Author(s):  
Murilo von Zuben ◽  
Jorge N.R. Martins ◽  
Luiza Berti ◽  
Imran Cassim ◽  
Daniel Flynn ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Second Molar ◽  
Mandibular Second Molar

scholarly journals C-Shaped Canal in Second Molar of Mandible among Cases of Cone Beam Computed Tomography in Tertiary Care Hospitals: A Descriptive Cross-sectional Study

2021 ◽  
Vol 59 (239) ◽  
Author(s):  
Neera Joshi ◽  
Suraj Shrestha ◽  
Sunanda Sundas ◽  
Kranti Prajapati ◽  
Sharada Devi Wagle ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Cone Beam ◽  
Sectional Study ◽  
Cross Sectional ◽  
Second Molar ◽  
Mandibular Second Molar ◽  
Tertiary Care Hospitals

Introduction: C-shaped canal configuration is mostly found in the mandibular second molar. The morphological characteristic of a C-shaped canal is the presence of a fin or web connecting the individual canal, making it difficult for cleaning, shaping, and obturation. The objective of this study was to find out the prevalence of C-shaped canal in mandibular second molar among cases of Cone Beam Computed Tomography in tertiary care hospitals. Methods: The descriptive cross-sectional study was conducted in the department of conservative dentistry and endodontics of tertiary care hospitals from 20th June 2020 to 20th December 2020 after receiving ethical approval from the Nepal Health Research Council on 19 June 2020. Cone-beam computed tomography images of 199 mandibular second molars with completely formed roots were used. Teeth with orthodontic braces, root resorption, root canal filling, and post were excluded from the study. The research was conducted taking a tooth as a unit. Convenience sampling was done. Statistical analysis was done by using Statistical Package for Social Sciences version 16. Point estimate at 95% Confidence Interval was calculated along with frequency and proportion for binary data. Results: The prevalence of C-shaped canal according to this study is 25 (12.6%) (7.99-17.21 at 95% Confidence Interval). Conclusions: The findings of the study conclude that C-shaped configuration is quite frequent in mandibular second molar among cases of Cone Beam Computed Tomography. A careful pre-operative radiographic evaluation may be helpful for diagnosing C-shaped configuration prior to root canal treatment.

MANAGEMENT OF C-SHAPED CANAL IN MANDIBULAR SECOND MOLAR: A CASE REPORT

2021 ◽  
pp. 66-68
Author(s):  
Shivangi Shreya ◽  
C.K. Wang
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Unusual Case ◽  
Cone Beam ◽  
Second Molar ◽  
Root Canals ◽  
Canal Systems ◽  
Mandibular Second Molar

Variations of root canal systems need not always be in the form of extra canals. Clinicians should be aware that there is a possibility of existence of fewer numbers of roots and root canals than normal, which presents varied canal anatomy and poses a challenge to the clinician's expertise. This case report deals with the management of an unusual case of C-shaped canal in mandibular second molar. Cone-beam computed tomography (CBCT) was employed to conrm the extension of the unusual anatomy. 3-D Obturation done with the help of thermoplastic obturation unit.

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