Publication: Root Canal Morphology of Mandibular Premolars in a Nepalese Population: A Cone-Beam Computed Tomographic Study
Date
2024
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Kathmandu University
Abstract
ABSTRACT
Background
Mandibular premolars are the most challenging teeth to treat endodontically
because of their variability in morphological and internal anatomical features. The
knowledge of root canal morphology and its variation is crucial for the endodontic
success.
Objective
To evaluate the root and canal morphology of mandibular premolars in a Nepalese
population by using Cone Beam Computed Tomography.
Method
A total of 1924 mandibular first and second premolar teeth from 481 patients
were evaluated. The number of roots and canal configuration were identified and
categorized according to Vertucci’s classification. An association between number
of roots and root canal configuration with gender and ethnic group was evaluated.
Also, the bilateral symmetrical occurrence of root and canal configuration were
investigated.
Result
Majority of mandibular first premolars (86.7%) and second premolars (98.7%) were
single rooted with type I root canal configuration followed by type V (8.6%) in first
premolars and type III (0.6%) in second premolars while 3.8% of first premolars
and 0.6% of second premolars were two rooted. In first premolars, there was an
association between gender with number of roots (p-value = 0.007) and root canal
configuration (p-value < 0.001). High degree of bilateral symmetry was seen in both
first (85.4%) and second premolars (96.9%) in terms of the number of roots and canal
configuration.
Conclusion
Most of the mandibular premolars were single rooted with Type I canal configuration.
However, clinicians should be aware of the variations that may be encountered
during routine endodontics which may influence the success behind treatment.
KEY WORDS
Cone-beam computed tomography, Mandibular premolars, Root canal configuration
Description
Chakradhar A,1 Nepal M,1 Pradhan SP,1 Bali H,2 Napit R1
1Department of Conservative Dentistry and Endodontics
2Department of Oral Medicine and Radiology
Dhulikhel Hospital, Kathmandu University Hospital
Kathmandu University School of Medical Sciences
Dhulikhel, Kavrepalanchok, Nepal
Keywords
Cone-beam computed tomography, Mandibular premolars, Root canal configuration