Imaging Science in Dentistry

  • 제45권2호
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  • Pages.95-101
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  • 2015
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  • 2233-7822(pISSN)
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  • 2233-7830(eISSN)
대한영상치의학회 (Korean Academy of Oral and Maxillofacial Radiology)
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Characterization of mandibular molar root and canal morphology using cone beam computed tomography and its variability in Belgian and Chilean population samples

  • Torres, Andres (Department of Imaging and Pathology, OMFS-IMPATH Research Group, Katholieke Universiteit Leuven) ;
  • Jacobs, Reinhilde (Department of Imaging and Pathology, OMFS-IMPATH Research Group, Katholieke Universiteit Leuven) ;
  • Lambrechts, Paul (Department of Conservative Dentistry, Katholieke Universiteit Leuven) ;
  • Brizuela, Claudia (Department of Endodontics, Universidad de los Andes) ;
  • Cabrera, Carolina (Department of Endodontics, Universidad de los Andes) ;
  • Concha, Guillermo (Department of Oral and Maxillofacial Radiology, Universidad de los Andes) ;
  • Pedemonte, Maria Eugenia (Department of Endodontics, Universidad de los Andes)
  • 투고 : 2014.11.18
  • 심사 : 2015.02.12
  • 발행 : 2015.06.30
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초록

Purpose: This study used cone-beam computed tomography (CBCT) to characterize mandibular molar root and canal morphology and its variability in Belgian and Chilean population samples. Materials and Methods: We analyzed the CBCT images of 515 mandibular molars (257 from Belgium and 258 from Chile). Molars meeting the inclusion criteria were analyzed to determine (1) the number of roots; (2) the root canal configuration; (3) the presence of a curved canal in the cross-sectional image of the distal root in the mandibular first molar and (4) the presence of a C-shaped canal in the second mandibular molar. A descriptive analysis was performed. The association between national origin and the presence of a curved or C-shaped canal was evaluated using the chi-squared test. Results: The most common configurations in the mesial root of both molars were type V and type III. In the distal root, type I canal configuration was the most common. Curvature in the cross-sectional image was found in 25% of the distal canals of the mandibular first molars in the Belgian population, compared to 11% in the Chilean population. The prevalence of C-shaped canals was 10% or less in both populations. Conclusion: In cases of unclear or complex root and canal morphology in the mandibular molars, CBCT imaging might assist endodontic specialists in making an accurate diagnosis and in treatment planning.

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