Odontogenesis pp 341-356 | Cite as

Three-Dimensional Assessment of Crown Size and Eruption Space for Developing Third Molars: Data Collection Techniques Based on Cone-Beam Computed Tomography (CBCT)

  • D. F. Marchiori
  • G. V. Packota
  • J. C. Boughner
Part of the Methods in Molecular Biology book series (MIMB, volume 1922)


Third molar development and eruption are two related areas of major interest in dental research into the etiology of “wisdom tooth” impaction. Third molars are not only an excellent model for studying dental development but also of fundamental clinical importance because they are very frequently impacted. Because the third molar is located in the distal-most region of the oral cavity, clinical access is relatively challenging. With the increasingly widespread use of cone-beam computed tomography (CBCT) in dentistry, studies and measurements of the third molar and its eruption area have become considerably easier to do. Here we present a novel CBCT-based measurement methodology we developed for our recent investigations that we hope will also be useful for the broader dental research community.

Key words

Third molar 3D imaging Measurement techniques Tooth development Research methods Wisdom tooth impaction 



The authors thank the Colleges of Dentistry and Medicine, the Department of Anatomy and Cell Biology, and the University of Saskatchewan, for allowing the use of specialized facilities as well as for the generous technical and financial resources provided in support to this project. Without their kind support, the development of the present study methodology would not be possible.


  1. 1.
    Liversidge HM (2008) Timing of human mandibular third molar formation. Ann Hum Biol 35(3):294–321CrossRefGoogle Scholar
  2. 2.
    Mohammed B, Mansur A (2013) Relationship of the inferior alveolar canal to impacted third molars as evaluated by cone beam computed tomography. Northwest Dent 92:35–37Google Scholar
  3. 3.
    Suomalainen A, Venta I, Mattila M, Turtola L, Vehmas T, Peltola JS (2010) Reliability of CBCT and other radiographic methods in preoperative evaluation of lower third molars. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 109(2):276–284CrossRefGoogle Scholar
  4. 4.
    Nguyen E, Boychuk D, Orellana M (2011) Accuracy of cone-beam computed tomography in predicting the diameter of unerupted teeth. Am J Orthod Dentofac Orthop 140(2):e59–e66CrossRefGoogle Scholar
  5. 5.
    Sonick M, Abrahams J, Faiella RA (1994) A comparison of the accuracy of periapical, panoramic, and computerized tomographic radiographs in locating the mandibular canal. Int J Oral Maxillofac Implants 9(4):455–460Google Scholar
  6. 6.
    Dudhia R, Monsour PA, Savage NW, Wilson RJ (2011) Accuracy of angular measurements and assessment of distortion in the mandibular third molar region on panoramic radiographs. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 111(4):508–516CrossRefGoogle Scholar
  7. 7.
    Marchiori DF, Packota GV, Boughner JC (2016) Third-molar mineralization as a function of available retromolar space. Acta Odontol Scand 74(7):509–517CrossRefGoogle Scholar
  8. 8.
    Ghougassian SS, Ghafari JG. Association between mandibular third molar formation and retromolar space. Angle Orthod [Internet]. 2014 Apr 28:1–5 p.
  9. 9.
    Lagravère MO, Carey J, Toogood RW, Major PW (2008) Three-dimensional accuracy of measurements made with software on cone-beam computed tomography images. Am J Orthod Dentofac Orthop 134(1):112–116CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • D. F. Marchiori
    • 1
  • G. V. Packota
    • 2
  • J. C. Boughner
    • 1
  1. 1.Department of Anatomy, Physiology, and Pharmacology, College of MedicineUniversity of SaskatchewanSaskatoonCanada
  2. 2.College of DentistryUniversity of SaskatchewanSaskatoonCanada

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