Author/Authors :
Yildirim Cihan نويسنده Department of Endodontics, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey , Culha Emre نويسنده Department of Endodontics, Faculty of Dentistry, Zirve University, Gaziantep Turkey , Aktan Ali Murat نويسنده Department of Dentomaxillofacial Radiology, Faculty of
Dentistry, University of U?ak, U?ak, Turkey , Demir Erhan نويسنده Department of Endodontics, Faculty of Dentistry,
University of Marmara, Istanbul, Turkey , Ertugrul Ciftci Mehmet نويسنده Department of Dentomaxillofacial Radiology, Faculty of
Dentistry, University of Akdeniz, Antalya, Turkey
Abstract :
Background The localization of the additional canal orifice is one
of the primary factors influencing the success of endodontic treatment.
To deal with this problem, several techniques that each have their own
advantages and disadvantages have been discussed in the literature.
Objectives The aim of the present in vitro study was to review a new
approach to localizing second mesiobuccal (MB2) canals in maxillary
first molars using cone beam computed tomography (CBCT). Patients and
Methods The CBCT scans of 296 patients who were referred to the
department of dentomaxillofacial radiology were included in the study.
The presence of MB2 canals, the angle formed by the mesiobuccal,
distobuccal, and palatal root canal orifices (∠MDP), and the angle
formed by the mesiobuccal, distobuccal, and MB2 canal orifices (∠MDMB2)
were evaluated on the axial section. Pearson correlation and multiple
linear regression methods were used for all predictions. All of the
analyses were performed using SPSS for windows version 22.0. A two-sided
P value < 0.05 was defined as statistically significant. Results
Of the 468 first molars, MB2 canals were observed in 296 subjects (141
females and 155 males). There were no statistically significant
differences between females and males (P = 0.300). The ∠MDP and ∠MDMB2
were detected and evaluated. A moderate positive correlation was found
between the ∠MDP and the ∠MDMB2. To predict the ∠MDMB2 values, it was
shown that the ∠MDMB2 increased by 0.420 degrees when the ∠MDP increased
by 1 degree. If the ∠MDP was greater than 90.95 degrees, there was a 78%
probability that MB2 canals could be found. Conclusion The determination
of the presence of MB2 in the maxillary first molars may be carried out
using CBCT scans. If the ∠MDP was 91 degrees or greater, there was
considered to be a higher probability that MB2 canals would be found in
the endodontic cavity. Due to the positive correlation between the ∠MDP
and the ∠MDMB2, the localization of MB2 canals may be easily performed
in relation to the main MB canal.
