J Dent Rehabil Appl Sci.  2015 Jun;31(2):104-111. 10.14368/jdras.2015.31.2.104.

A cone-beam computed tomographic study of C-shaped root and root canal in maxillary molars

• Kim JW
• Ji HJ
• Cho KM
• Kim SM
• Park SH

• KMID: 2155037
• DOI: http://doi.org/10.14368/jdras.2015.31.2.104

Abstract

PURPOSE
The aim of this retrospective study was to investigate the prevalence rate and types of C-shaped roots and C-shaped canal in maxillary molars by analyzing cone-beam computed tomography (CBCT) in a Korean population.
MATERIALS AND METHODS
Total of 357 CBCT images of maxillary molars (186 first molar, 171 second molar) were evaluated by two Endodontic specialists.
RESULTS
Eight types of C-shaped roots and 5 types of C-shaped canals were founded, the prevalence rate of C-shaped roots and canals were 21.0% and 5.3% respectively.
CONCLUSION
These anatomical variations were more frequent in second molars than the first molars. Clinicians should have anatomical knowledge about various types of C-shaped root and root canal for successful root canal therapy.

Keyword

cone beam computed tomography (CBCT); maxillary molar; C-shaped root; C-shaped root canal

MeSH Terms

Cone-Beam Computed Tomography
Dental Pulp Cavity*
Molar*
Prevalence
Retrospective Studies
Root Canal Therapy
Specialization