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ORIGINAL ARTICLE
Year : 2016  |  Volume : 6  |  Issue : 2  |  Page : 66-70

Frequency of middle mesial canals in mandibular first molars in North Indian population - An in vivo study


Department of Conservative Dentistry and Endodontics, Dr. Z. A. Dental College, AMU, Aligarh, Uttar Pradesh, India

Correspondence Address:
Osama Adeel Khan Sherwani
Department of Conservative Dentistry and Endodontics, Dr. Z. A. Dental College, AMU, Aligarh - 202 002, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1658-5984.180618

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Objectives: The primary aim of the study was to determine the frequency of middle mesial (MM) canals in mandibular first molars in North Indian population. The secondary aim was to analyze whether an association exists between the detection rate of MM canals and age, gender, and number of distal canals. Materials and Methods: All mature mandibular first molars endodontically treated between March 2013 and March 2015 were included in the study. After instrumenting the main canals, the clinician inspected the mesial developmental groove under dental operating microscope (DOM) using ultrasonic tips and endodontic explorer to detect accessory mesial canals. The canal, if found, was negotiated, cleaned, shaped, and recorded. Results were analyzed using Chi-square test. Results: A total of 258 first molars from 243 patients were treated during the specified period, of which 28.3% had negotiable MM canals. The frequency of MM canals was 36.6% in patients 11-30 years old, 22.6% in patients 31-50 years old, and 18.4% in patients >50 years. Statistical analysis revealed a significant relationship of different age groups with the incidence of MM canals (P < 0.05). A significant relationship was also found between the detection rate of two canals in distal root and the presence of MM canals (P < 0.05) with gender having no influence. Conclusion: The presence of MM canals is quite high in North Indian population. Younger patients had a higher incidence of MM canals. Mandibular first molars with two separate distal canals showed a tendency to have MM canals.


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