Cone Beam Computed Tomography Guided Localization of Canal Lumina
Essential part of endodontic treatment comprises locating and negotiating infected root canals. Calcified canals pose diagnostic and treatment challenges. The origin of canal lumen and distance from CEJ is estimated by conventional projection radiography. Cone-beam computed tomography (CBCT) has the potential to offer improved visualization and accurate localization of root canals. Objective: The purpose of this study was to compare the efficacy of CBCT and conventional projection radiography for detection of canal lumina in extracted human teeth. Methods: Forty three teeth/roots (n=43) appearing to have partially calcified canals by conventional radiography were selected from an existing collection of extracted teeth. Two imaging systems were compared for their ability to detect any evidence of a root canal lumen: CBCT images (3DX Accuitomo, J. Morita, Kyoto, Japan), and periapical F-speed film radiographs (PA). The test teeth were mounted in a dry sagittally-sectioned mandible and CBCT scans and periapical radiographs were taken. The distance of the canal lumen origin was measured in millimeters from the apical extent of the CEJ on periapical radiographs and CBCT scans. The CBCT and PA radiographs were evaluated by three endodonists. The CBCT images were evaluated dynamically in the axial, sagittal and coronal planes. Results: Root canal lumina were detected in an average of 98% of the roots using CBCT and 64% of roots using PA radiographs. The increase in the detection frequency was 34% (p<0.05). The average agreement between observers was 98% for CBCT and 60% for PA radiographs. The level of agreement between observers found in CBCT versus PA radiograph was significant (p≤0.007). The detection of distance of the canal lumen from the CEJ was significantly shorter in CBCT scans compared to PA radiograms (p<0.05). Conclusion: The 3DX Accuitomo images proved to be superior in its ability to localize canal lumina compared to conventional periapical radiographs.
Division: IADR/AADR/CADR General Session
Meeting:2009 IADR/AADR/CADR General Session (Miami, Florida) Location: Miami, Florida
Year: 2009 Final Presentation ID:937 Abstract Category|Abstract Category(s):Pulp Biology & Regeneration Research
Authors
Chugal, Nadia
( University of California Los Angeles, School of Dentistry, Los Angeles, CA, USA
)
Maupin, Charles
( University of California Los Angeles, School of Dentistry, Los Angeles, CA, USA
)
Elashoff, David
( University of California Los Angeles, Los Angeles, CA, USA
)
Chang, Ting-ling
( University of California Los Angeles, School of Dentistry, Los Angeles, CA, USA
)
Longhurst, Gerald
( University of California Los Angeles, School of Dentistry, Los Angeles, CA, USA
)
Kang, Mo K.
( University of California Los Angeles, School of Dentistry, Los Angeles, CA, USA
)
White, Stuart
( University of California Los Angeles, School of Dentistry, Los Angeles, CA, USA
)
Tetradis, Sotirios
( University of California Los Angeles, School of Dentistry, Los Angeles, CA, USA
)
SESSION INFORMATION
Poster Session
Endodontic Materials, Techniques and Outcomes, Tooth Anatomy
04/02/2009