Abstract
Purpose
To investigate the root canal morphology of mandibular incisors using cone-beam computed tomography (CBCT).
Materials and methods
A total of 353 patients with 1,412 healthy, well-developed mandibular incisors were enrolled. Radiographic examination by CBCT was conducted as part of their routine examination, diagnosis and treatment planning. The following observations were made using CBCT: (1) the number of roots; (2) the number of canals; (3) canal configuration according to Vertucci’s classification; (4) the position of root canal bifurcations.
Results
Two canals were found in 10.9 % of mandibular central incisors, 25.5 % of lateral incisors and in 18.2 % of all the 1,412 mandibular incisors. Significantly, more lateral incisors possessed two canals than central incisors (p < 0.05). Of the teeth with two canals, type III incisors were the most prevalent, followed by types II, IV and V. Furthermore, 37.7 % of teeth were found to have root canal bifurcations that were at or near to the cortical-middle third junction regions of the roots.
Conclusion
Routine mode CBCT imaging was clinically useful for detection of two canals and determines the position of root canal bifurcations in mandibular incisors.
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All authors disclose no actual or potential conflicts of interest, including any financial, personal, or other relationship with other people or organizations that could inappropriately influence this work.
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T. Wang and J. Ge equally contributed to this work.
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Lin, Z., Hu, Q., Wang, T. et al. Use of CBCT to investigate the root canal morphology of mandibular incisors. Surg Radiol Anat 36, 877–882 (2014). https://doi.org/10.1007/s00276-014-1267-9
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DOI: https://doi.org/10.1007/s00276-014-1267-9