Imaging Science in Dentistry

  • 제43권2호
  • /
  • Pages.105-109
  • /
  • 2013
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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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Comparison of panoramic radiography with cone beam CT in predicting the relationship of the mandibular third molar roots to the alveolar canal

  • Shahidi, Shoaleh (Biomaterial Research Center, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences) ;
  • Zamiri, Barbod (Department of Oral and Maxillofacial Surgery, School of Dentistry, Shiraz University of Medical Sciences) ;
  • Bronoosh, Pegah (Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences)
  • 투고 : 2012.09.26
  • 심사 : 2013.01.24
  • 발행 : 2013.06.30
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초록

Purpose: Preoperative radiographic assessment of the mandibular third molars is essential to prevent inferior alveolar nerve damage during extraction. The purpose of this study was to assess the reliability of panoramic signs of association between the roots of teeth and the canal, and to compare the panoramic signs with cone beam computed tomography (CBCT) findings. Materials and Methods: CBCT images of 132 impacted mandibular third molars were evaluated to determine the association of the root to the canal. The CBCT findings were compared with the corresponding panoramic images. Logistic regression analysis was used to define the diagnostic criteria of the panoramic images. Results: Among the panoramic signs, loss of the cortical line was the most frequent radiographic sign predicting association (sensitivity: 79.31). Contact of the tooth with the canal was observed in all cases in which the loss of cortical line of the canal or darkening of the roots was found on the panoramic radiographs. Conclusion: Darkening of the roots and loss of the cortical line on panoramic radiographs might be highly suggestive of the risk of nerve injury.

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참고문헌

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  2. Pre- and postoperative management techniques. Before and after. Part 2: the removal of third molars vol.218, pp.5, 2015, https://doi.org/10.1038/sj.bdj.2015.145
  3. Efficacy of CBCT for assessment of impacted mandibular third molars: a review - based on a hierarchical model of evidence vol.44, pp.1, 2013, https://doi.org/10.1259/dmfr.20140189
  4. Accuracy of Panoramic Radiograph in Assessment of the Relationship Between Mandibular Canal and Impacted Third Molars vol.10, pp.None, 2013, https://doi.org/10.2174/1874210601610010322
  5. Risk assessment of M3Ms and decisions on ordering a CBCT and prescribing a coronectomy vol.44, pp.10, 2013, https://doi.org/10.12968/denu.2017.44.10.957
  6. Evaluation of Juxta-Apical Radiolucency as a Risk Factor for Inferior Alveolar Nerve Damage: A Cone-Beam Computed Tomography (CBCT) Study vol.21, pp.10, 2013, https://doi.org/10.5812/semj.93330
  7. Radiographic Position of Impacted Mandibular Third Molars and Their Association with Pathological Conditions vol.2021, pp.None, 2013, https://doi.org/10.1155/2021/8841297
  8. Reliability of panoramic radiography in predicting proximity of third molars to the mandibular canal: A comparison using cone-beam computed tomography vol.51, pp.1, 2013, https://doi.org/10.5624/isd.20200095