Saudi Endodontic Journal

REVIEW ARTICLE
Year
: 2021  |  Volume : 11  |  Issue : 2  |  Page : 142--153

Prevalence and morphology of root canal isthmus in human permanent teeth using micro-computed tomography: A systematic review


Velmurugan Natanasabapathy1, Buvaneshwari Arul1, Sneha Susan Santosh1, Aishwarya Vasudevan1, Sharath Sundar Mahendran1, Ambalavanan Namasivayam2, Kandaswamy Deivanayagam3, MR Srinivasan4 
1 Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Meenakshi Ammal Dental College and Hospital, Meenakshi Academy of Higher Education and Research (Maher), Chennai, Tamil Nadu, India
2 Department of Periodontology and Oral Implantology, Faculty of Dentistry, Meenakshi Ammal Dental College and Hospital, Meenakshi Academy of Higher Education and Research (Maher), Chennai, Tamil Nadu, India
3 Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
4 Department of Conservative Dentistry and Endodontics, Sri Venkateswara Dental College and Hospital, Chennai, Tamil Nadu, India

Correspondence Address:
Dr. Velmurugan Natanasabapathy
Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Meenakshi Academy of Higher Education and Research (Maher) University, No. 1, Alapakkam Main Road, Maduravoyal, Chennai - 600 095, Tamil Nadu
India

Introduction: The isthmus is a communication between two or more root canals that contains pulp tissue. Its unpredictable location, variable prevalence, and anatomic complexity often result in challenging debridement. The knowledge of these factors may prove beneficial for successful endodontic treatment. The primary aim of this systematic review was to assess the prevalence and morphology of root canal isthmus (RCI) in human permanent teeth using micro-computed tomography (micro-CT) studies. The secondary aim was to assess the influence of demographic factors such as age, gender, and geographic region on the prevalence and morphology of the isthmus. Materials and Methods: An electronic search was conducted until January 2020. Studies published in the English language using micro-CT for the evaluation of isthmus prevalence and morphology were included. Sixteen articles met the inclusion criteria and were subjected to qualitative synthesis. Results: The prevalence of isthmus in the mesiobuccal root of maxillary first molars ranged from 8.9% to 70.8%, with maximum prevalence in the middle third of the root (49.50%–73%). The mesial root of mandibular molars had a prevalence ranging from 80.6% to 100% on full root analysis and 85%–88.89% in the apical third. Conclusion: The prevalence of RCI was higher in the mesiobuccal roots of maxillary molars and the mesial roots of mandibular molars, extending in the corono-apical direction with a complex and variable morphology. The influence of demographic factors on the prevalence of RCI could not be established clearly.


How to cite this article:
Natanasabapathy V, Arul B, Santosh SS, Vasudevan A, Mahendran SS, Namasivayam A, Deivanayagam K, Srinivasan M R. Prevalence and morphology of root canal isthmus in human permanent teeth using micro-computed tomography: A systematic review.Saudi Endod J 2021;11:142-153


How to cite this URL:
Natanasabapathy V, Arul B, Santosh SS, Vasudevan A, Mahendran SS, Namasivayam A, Deivanayagam K, Srinivasan M R. Prevalence and morphology of root canal isthmus in human permanent teeth using micro-computed tomography: A systematic review. Saudi Endod J [serial online] 2021 [cited 2021 Jun 17 ];11:142-153
Available from: https://www.saudiendodj.com/article.asp?issn=1658-5984;year=2021;volume=11;issue=2;spage=142;epage=153;aulast=Natanasabapathy;type=0