Poster Presentation

Poster Presentation

PR29 - The Impact of Troughing Depth on Identifying Mesio-Lingual Canals in Maxillary Molars

Thursday, April 26
10:00 AM - 1:00 PM
Room: Exhibit Hall

Objective: The purpose of this study is to evaluate the depth of troughing needed to locate the mesio-lingual canals in maxillary molars. Troughing the pulp chamber floor can locate hidden or calcified mesio-lingual canals. Materials and Methods: This study utilized eight extracted maxillary first and second molars with mesio-lingual canals confirmed by sectioning the mesio-buccal root in cross-section 5 mm coronal to the apex. A standard access cavity was prepared and mesio-buccal, disto-buccal, and palatal canals were located. A groove was troughed palatal to the mesio-buccal orifice and slightly mesial to the line connecting mesio-buccal and palatal canal orifices until the mesio-lingual canal was visually identified and confirmed with an endodontic file. Troughing depth was determined using digital calipers and measuring the distance from the mesio-buccal cusp tip to the pulp chamber floor before troughing and from the mesio-buccal cusp tip to the mesio-lingual orifices after troughing was performed. Results: The depth of troughing needed to locate the mesio-lingual canal ranged from 0.04 to 2.12 mm. Five teeth needed to be troughed less than 0.5 mm and two teeth needed to be troughed more than 2.0 mm to identify the mesio-lingual canal. Conclusion: In majority of cases, 0.5 mm troughing was sufficient to locate mesio-lingual canals. Clinicians will miss some mesio-lingual canals if troughing is limited to less than 2.0 mm. The sample size of this pilot study will be increased to 50 teeth to draw reliable conclusions.

Anshul Mainkar

Endodontics Resident
University of Connecticut School of Dental Medicine

I am a 2nd year endodontics resident at the University of Connecticut. I intend to enter private practice after graduating residency. I have lived in Virginia for most of my life. I completed dental school from Columbia University.

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Qiang Zhu

Professor

1984 DDS from Peking University School of Dental Medicine, Beijing, China. 1996 Endodontic Certificate from University of Connecticut School of Dental Medicine. Currently Professor, Division of Endodontology, University of Connecticut School of Dental Medicine, 263 Farmington Ave. Farmington,, CT 06030-1715

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Kamran Safavi

Professor and Chair
University of Connecticut School of Dental Medicine

Kamran Safavi (pronounced the same), born in Iran 1942, DMD University of Tehran 1966, post graduate restorative dentistry University of London 1971, Endodontic Certificate / MEd Medical College of Virginia 1978, American Board of Endodontics 1984, AAE life member, full-time faculty member and endodontic program director since 1978, UConn Health since 1978, full-professor with tenure, Chair, Division of Endodontology, UConn Health, with a history of biomedical research, mainly a clinician with extensive intramural endodontic practice.

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