Imaging Science in Dentistry

  • 제42권3호
  • /
  • Pages.121-127
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  • 2012
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  • 2233-7822(pISSN)
  • /
  • 2233-7830(eISSN)
대한영상치의학회 (Korean Academy of Oral and Maxillofacial Radiology)
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Correlation of panoramic radiographs and cone beam computed tomography in the assessment of a superimposed relationship between the mandibular canal and impacted third molars

  • Jung, Yun-Hoa (Department of Oral and Maxillofacial Radiology, College of Dentistry, Pusan National University) ;
  • Nah, Kyung-Soo (Department of Oral and Maxillofacial Radiology, College of Dentistry, Pusan National University) ;
  • Cho, Bong-Hae (Department of Oral and Maxillofacial Radiology, College of Dentistry, Pusan National University)
  • 투고 : 2012.01.28
  • 심사 : 2012.03.04
  • 발행 : 2012.09.30
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초록

Purpose: This study evaluated the association between cone beam computed tomography (CBCT) and panoramic radiographs in the assessment of a superimposed relationship between the mandibular canal and impacted third molars. Materials and Methods: The study samples consisted of 175 impacted third molars from 131 patients who showed a superimposed relationship between the mandibular canal and third molars on panoramic radiographs and were referred for the examination of the mandibular canal with CBCT. Panoramic images were evaluated for the darkening of the root and the interruption of the mandibular canal wall. CBCT images were used to assess the buccolingual position of the mandibular canal relative to the third molar, the proximity of the roots to the canal, and lingual cortical bone loss. The association of the panoramic and CBCT findings was examined using a Chi-square test and Fisher's exact test. Results: Panoramic radiographic signs were statistically associated with CBCT findings (P<0.01). In cases of darkening roots, lingual cortical bone loss or buccally positioned canals were more frequent. In cases in which the mandibular canal wall was interrupted on panoramic radiographs, contact or lingually positioned canals were more frequent. Conclusion: The results of this study suggest that contact between the mandibular third molar and canal and a lingually positioned canal could be more frequently observed in cases of the interruption of the white line of the mandibular canal and that there could be more lingual cortical loss in cases of darkening roots.

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참고문헌

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  3. Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography vol.15, pp.6, 2012, https://doi.org/10.5005/jp-journals-10024-1609
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  5. Efficacy of CBCT for assessment of impacted mandibular third molars: a review - based on a hierarchical model of evidence vol.44, pp.1, 2012, https://doi.org/10.1259/dmfr.20140189
  6. Evaluation of the maxillary third molar position and its relationship with the maxillary sinus: a CBCT study vol.32, pp.3, 2012, https://doi.org/10.1007/s11282-015-0228-2
  7. Classification of impacted mandibular third molars using cone beam computed tomography based on neurological risks: N.R.C. vol.23, pp.3, 2012, https://doi.org/10.1051/mbcb/2017015
  8. Role of Panoramic Imaging and Cone Beam CT for Assessment of Inferior Alveolar Nerve Exposure and Subsequent Paresthesia Following Removal of Impacted Mandibular Third Molar vol.17, pp.2, 2012, https://doi.org/10.1007/s12663-017-1026-7
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  10. Can narrowing of the mandibular canal on pre-operative panoramic radiography predict close anatomical contact of the mandibular canal with the mandibular third molar? A meta-analysis vol.36, pp.2, 2012, https://doi.org/10.1007/s11282-019-00375-4
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