Prevalence of Middle Mesial Canals and Isthmi in the Mesial Root of Mandibular Molars: An In Vivo Cone-beam Computed Tomographic Stud

3.75 (4 votes)

Many studies have investigated the morphology of the mandibular molar, but the prevalence of the middle mesial (MM) canal in the mesial root of the mandibular molar is still the subject of controversy. In addition, in previous literature, a true MM canal has not been clearly distinguished from an isthmus between the mesiobuccal and mesiolingual canals. 

At the conclusion, participants should be able to:

  • Describe the importance of detecting and cleaning the mid mesial canals and isthmus in mandibular molars.
  • Discuss the use of CBCT in detection of mid-mesial canals and isthmus in mandibular molars.
  • Discuss the prevalence and configuration of mid- mesial canals and isthmus in the mesial roots of mandibular molars.

1.0 CE hour 


Open to download resource.
Open to download resource.
7 Questions
CE Test
5 Questions  |  Unlimited attempts  |  4/5 points to pass
5 Questions  |  Unlimited attempts  |  4/5 points to pass
1.00 CE credit  |  Certificate available
1.00 CE credit  |  Certificate available

Mehrnaz Tahmasbi, D.D.S

Poorya Jalali, D.D.S

Madhu K. Nair, D.M.D., M.S.

Sevin Barghan, D.M.D., M.S.

Umadevi P. Nair, B.D.S., D.M.D., MDS

Dr. Uma P. Nair received her D.M.D. degree at the University of Pittsburgh. She completed her Postgraduate training in Endodontics from India as well as the US from University of Pittsburgh. She is currently in private practice in Dallas, Texas. She served as a faculty at the University of Florida where she was the Director of Predoctoral Endodontics and the Director for surgical endodontics for the residency program for 12 years after which she served as an Associate Professor and the Director of Graduate Endodontics at the Medical University of South Carolina at Charleston.Her research interests include 3D imaging of vertical root fractures and the applications of CBCT in Endodontics. Dr. Nair has several publications and has authored chapters in endodontic textbooks. She has also been invited for lectures at the national and international level. She also served on national committees for the American Association of Endodontics. Dr. Nair is a Diplomate of the American Board of Endodontics.


The authors deny any conflicts of interest related to this study