title: Evaluation of the relationship between mandibular third molar and mandibular canal by different algorithms of cone-beam computed tomography.
abstract: OBJECTIVE
  Exact location of the inferior alveolar nerve (IAN) bundle is very important. The aim of this study is to evaluate the relationship between the mandibular third molar and the mandibular canal by cone-beam computed tomography.
  
  
  METHODS
  This was a cross-sectional study with convenience sampling. 94 mandibular CBCTs performed with CSANEX 3D machine (Soredex, Finland) and 3D system chosen. Vertical and horizontal relationship between the mandibular canal and the third molar depicted by 3D, panoramic reformat view of CBCT and cross-sectional view. Cross-sectional view was our gold standard and other view evaluated by it.
  
  
  RESULTS
  There were significant differences between the vertical and horizontal relation of nerve and tooth in all views (p < 0.001).
  
  
  CONCLUSIONS
  The results showed differences in the position of the inferior alveolar nerve with different views of CBCT, so CBCT images are not quite reliable and have possibility of error.
authors.affiliation: Associate Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Torabinejad Dental Research Center; Dental Implants Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
authors.forename: Mojdeh
authors.initials: M
authors.lastname: Mehdizadeh
authors.affiliation: Student, Department of Dentistry, University of Medical Sciences Isfahan, Iran, Phone: +989131093769, e-mail: navid.ahmadi03@gmail.com.
authors.forename: Navid
authors.initials: N
authors.lastname: Ahmadi
authors.affiliation: Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
authors.forename: Mahsa
authors.initials: M
authors.lastname: Jamshidi
mesh_terms: D000465:Algorithms; D019412:Anatomy, Cross-Sectional / Q000706:statistics & numerical data; D054893:Cone-Beam Computed Tomography / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000706:statistics & numerical data; D008334:Mandible / Q000000981:diagnostic imaging* / Q000294:innervation; D008340:Mandibular Nerve / Q000000981:diagnostic imaging*; D008964:Molar, Third / Q000000981:diagnostic imaging* / Q000294:innervation; D011862:Radiography, Panoramic / Q000706:statistics & numerical data; D015203:Reproducibility of Results; D019227:Tooth Apex / Q000000981:diagnostic imaging; D014092:Tooth Root / Q000000981:diagnostic imaging
keywords: Ahmadi N; Cone-beam computed tomography; Inferior alveolar nerve bundle; Jamshidi M. Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography. J Contemp Dent Pract 2014;15(6):740-745. Source of support: Nil Conflict of interest: None.; Mandibular canal; Mandibular third molar; Reliable. How to cite this article: Mehdizadeh M