Research Article | Open Access
Heinz-Theo Lübbers, Astrid L. Kruse, Joachim A. Obwegeser, Gerold Eyrich, "Oblique High Resolution Tomography: The Ideal Plane for Visualization of the Gonial Section of the Mandibular Canal and its Related Structures?", Journal of Healthcare Engineering, vol. 3, Article ID 137517, 18 pages, 2012. https://doi.org/10.1260/2040-22184.108.40.206
Oblique High Resolution Tomography: The Ideal Plane for Visualization of the Gonial Section of the Mandibular Canal and its Related Structures?
A new radiologic technique is introduced in this paper for reducing the risk of nerve damage as a result of surgical removal of the mandibular third molar (wisdom tooth). The gonial part of the mandibular canal is obliquely scanned with tomograms on a plane parallel to this part of the mandibular canal. This procedure can be performed with the patient either prone or supine. The scans obtained cover a much longer section of the canal than the axial or coronal plane. Therefore, the scan provides more precise information on the spatial relationship between the mandibular canal and the surrounding structures with fewer images and, therefore, a lower radiation dose. Through such oblique plane scanning, metal artifacts from dental restorations do not impair visualization of the mandibular canal. Clinical cases demonstrating the advantages of this new technique are presented.
- R. H. Haug, D. H. Perrott, M. L. Gonzalez, and R. M. Talwar, “The American Association of Oral and Maxillofacial Surgeons Age-Related Third Molar Study,” J Oral Maxillofac Surg, vol. 63, no. 8, pp. 1106–14, 2005.
- Z. H. Baqain, A. A. Karaky, F. Sawair, A. Khraisat, R. Duaibis, and L. D. Rajab, “Frequency estimates and risk factors for postoperative morbidity after third molar removal: a prospective cohort study,” J Oral Maxillofac Surg, vol. 66, no. 11, pp. 2276–83, 2008.
- F. Blondeau and N. G. Daniel, “Extraction of impacted mandibular third molars: postoperative complications and their risk factors,” J Can Dent Assoc, vol. 73, no. 4: 325, 2007.
- S. M. Susarla and T. B. Dodson, “Preoperative computed tomography imaging in the management of impacted mandibular third molars,” J Oral Maxillofac Surg, vol. 65, no. 1, pp. 83–8, 2007.
- J. P. Rood and B. A. Shehab, “The radiological prediction of inferior alveolar nerve injury during third molar surgery,” Br J Oral Maxillofac Surg, vol. 28, no. 1, pp. 20–5, 1990.
- Y. Nakagawa, H. Ishii, Y. Nomura et al., “Third molar position: reliability of panoramic radiography,” J Oral Maxillofac Surg, vol. 65, no. 7, pp. 1303–8, 2007.
- K. Nakamori, K. Fujiwara, A. Miyazaki et al., “Clinical assessment of the relationship between the third molar and the inferior alveolar canal using panoramic images and computed tomography,” J Oral Maxillofac Surg, vol. 66, no. 11, pp. 2308–13, 2008.
- W. Tantanapornkul, K. Okochi, A. Bhakdinaronk, N. Ohbayashi, and T. Kurabayashi, “Correlation of darkening of impacted mandibular third molar root on digital panoramic images with cone beam computed tomography findings,” Dentomaxillofac Radiol, vol. 38, no. 1, pp. 11–6, 2009.
- J. Ambrose, “Computerized transverse axial scanning (tomography). 2. Clinical application,” Br J Radiol, vol. 46, no. 552, pp. 1023–47, 1973.
- G. N. Hounsfield, “Computerized transverse axial scanning (tomography). 1. Description of system,” Br J Radiol, vol. 46, no. 552, pp. 1016–22, 1973.
- W. G. Engelke, C. G. Diederichs, and I. I. Deckwer, “Preoperative imaging in a case of molar retention,” Int J Oral Maxillofac Surg, vol. 26, no. 4, pp. 278–9, 1997.
- H. T. Lubbers, F. Matthews, G. Damerau et al., “Anatomy of impacted lower third molars evaluated by computerized tomography: is there an indication for 3-dimensional imaging?” Oral Surg Oral Med Oral Pathol Oral Radiol Endod, vol. 111, no. 5, pp. 547–550, 2011.
- G. Eyrich, B. Seifert, F. Matthews et al., “3-Dimensional Imaging for Lower Third Molars: Is There an Implication for Surgical Removal?” J Oral Maxillofac Surg, 2011.
- A. Jhamb, R. S. Dolas, P. K. Pandilwar, and S. Mohanty, “Comparative efficacy of spiral computed tomography and orthopantomography in preoperative detection of relation of inferior alveolar neurovascular bundle to the impacted mandibular third molar,” J Oral Maxillofac Surg, vol. 67, no. 1, pp. 58–66, 2009.
- W. Tantanapornkul, K. Okouchi, Y. Fujiwara et al., “A comparative study of cone-beam computed tomography and conventional panoramic radiography in assessing the topographic relationship between the mandibular canal and impacted third molars,” Oral Surg Oral Med Oral Pathol Oral Radiol Endod, vol. 103, no. 2, pp. 253–9, 2007.
- A. C. Miracle and S. K. Mukherji, “Conebeam CT of the head and neck, part 1: physical principles,” AJNR Am J Neuroradiol, vol. 30, no. 6, pp. 1088–95, 2009.
- J. B. Ludlow and M. Ivanovic, “Comparative dosimetry of dental CBCT devices and 64-slice CT for oral and maxillofacial radiology,” Oral Surg Oral Med Oral Pathol Oral Radiol Endod, vol. 106, no. 1, pp. 106–14, 2008.
Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.