A Retrospective Study of Roots and Root Canal Morphology in Mandibular Premolars using Cone Beam Computed Tomography in Delhi-NCRCorrespondence Address :
Dr. Sneh Mishra,
Postgraduate Student, Department of Conservative Dentistry and Endodontics, Its
Centre for Dental Studies and Research, Ghaziabad, Uttar Pradesh-201009, India.
Introduction: The anatomical heterogeneity of mandibular premolars has always been considered an enigma and it makes them potentially prone to high rates of endodontic failure. Only few studies have discussed the potential role of Cone Beam Computed Tomography (CBCT) in the assessment of root morphology, canal configuration and their complex variations.
Aim: To investigate the number of roots and root canals along with the canal configuration in mandibular premolars in the Delhi-National Capital Region population using CBCT imaging.
Materials and Methods: The retrospective observational study was conducted where 432 CBCT images of 108 patients were acquired from different CBCT centres in Delhi – NCR region to determine the anatomy and morphology of mandibular premolars. The number of roots, root canals and their configuration and its association with symmetry and gender was evaluated. Pearson Chi-square test and Fisher’s-exact test were used for statistical analysis.
Results: The mandibular first and second premolars reported with single root in 94.9% and 98.1% cases, respectively. Majority of 1st premolars displayed 2 canals (59.7%) whereas 2nd premolars exhibited single canal (58.3%) more frequently. Type I configuration was most prevalent in both 1st premolar (39.8%) and 2nd premolars (60.2%). Type V configuration was significantly reported on the left in both mandibular 1st and 2nd premolars (13.9% and 4.6%), respectively. There was no significant gender predilection observed for the morphology of roots, root canal and canal configuration.
Conclusion: In Delhi-NCR, there was a high prevalence of multiple canals and variable configurations in 1st premolars whereas single root canal and Type I canal configuration were more frequent in 2nd premolars with a significant bilateral distribution. However, in both mandibular premolars there was a slight inclination reported for multiple canals and variable configurations towards left with no gender predilection.
Anatomic variations, Bilateral symmetry, National capital region, Number of canals, Number of roots, Root canal configuration, Vertucci’s classification
Date of Submission: Jan 07, 2021
Date of Peer Review: Mar 16, 2021
Date of Acceptance: May 15, 2021
Date of Publishing: Jul 01, 2021
• Financial or Other Competing Interests: None
• Was Ethics Committee Approval obtained for this study? Yes
• Was informed consent obtained from the subjects involved in the study? Yes
• For any images presented appropriate consent has been obtained from the subjects. NA
PLAGIARISM CHECKING METHODS:
• Plagiarism X-checker: Jan 08, 2021
• Manual Googling: May 14, 2021
• iThenticate Software: Jun 01, 2021 (18%)
ETYMOLOGY: Author Origin
- Emerging Sources Citation Index (Web of Science, thomsonreuters)
- Index Copernicus ICV 2017: 134.54
- Academic Search Complete Database
- Directory of Open Access Journals (DOAJ)
- Google Scholar
- HINARI Access to Research in Health Programme
- Indian Science Abstracts (ISA)
- Journal seek Database
- Popline (reproductive health literature)