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http://dx.doi.org/10.5395/rde.2020.45.e1

The prevalence of radix molaris in the mandibular first molars of a Saudi subpopulation based on cone-beam computed tomography  

AL-Alawi, Hassan (Dental Department, Ministry of Health Endodontist, Huraymala General Hospital)
Al-Nazhan, Saad (Department of Restorative Dentistry-Endodontics, College of Dentistry, Riyadh Elm University)
Al-Maflehi, Nassr (Department of Preventive Dental Sciences-Biostatistics, College of Dentistry, King Saud University)
Aldosimani, Mazen A. (Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University)
Zahid, Mohammed Nabil (Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam Bin AbdulAziz University)
Shihabi, Ghadeer N. (General Practitioner)
Publication Information
Restorative Dentistry and Endodontics / v.45, no.1, 2020 , pp. 1.1-1.9 More about this Journal
Abstract
Objectives: The purpose of this study was to determine the incidence of radix molaris (RM) (entomolaris and paramolaris) in the mandibular first permanent molars of a sample Saudi Arabian subpopulation using cone-beam computed tomography (CBCT). Materials and Methods: A total of 884 CBCT images of 427 male and 457 female Saudi citizens (age 16 to 70 years) were collected from the radiology department archives of 4 dental centers. A total of 450 CBCT images of 741 mature mandibular first molars that met the inclusion criteria were reviewed. The images were viewed at high resolution by 3 examiners and were analyzed with Planmeca Romexis software (version 5.2). Results: Thirty-three (4.5%) mandibular first permanent molars had RM, mostly on the distal side. The incidence of radix entomolaris (EM) was 4.3%, while that of radix paramolaris was 0.3%. The RM roots had one canal and occurred more unilaterally. No significant difference in root configuration was found between males and females (p > 0.05). Types I and III EM root canal configurations were most common, while type B was the only RP configuration observed. Conclusions: The incidence of RM in the mandibular first molars of this Saudi subpopulation was 4.5%. Identification of the supernumerary root can avoid missing the canal associated with the root during root canal treatment.
Keywords
Cone-beam CT; Mandibular first molar; Radix entomolaris; Radix molaris; Root canal morphology;
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Times Cited By KSCI : 2  (Citation Analysis)
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