Position of the impacted third molar in relation to the mandibular canal. Diagnostic accuracy of cone beam computed tomography compared with panoramic radiography

Removal of Mandibular Third Molar Accidently displaced into the Parapharyngeal Space aided by Cone-Beam Computed Tomography: A Case Report

“…The surgeon emphasizes that using CBCT to locate the tooth is necessary for the quick and successful dislodging. Conventional PAN radiographs could not determine the precise location of the displaced tooth and the relation between the tooth and the adjacent anatomical structures, whereas computed tomography (CT) scans could, especially the CBCT that could reconstruct the 3D images with lower x-ray dose than the conventional CT [6]. The necessity of using advanced imaging techniques to locate a displaced tooth and its relation to the adjacent anatomic structures has also been particularly pointed out, but the CBCT has not been used in the few reported cases [7][8][9][10].…”

“…Cone-beam computed tomography (CBCT) is a relatively new imaging modality. Compared with the conventional panoramic radiography (PAN), CBCT can reconstruct the three-dimensional images, provides better image of the teeth and their surrounding structures and thus gives the doctors a more detailed insight into the local anatomy of the teeth [5,6]. As a result, assisted with the CBCT images, the displaced IMTM could be located more accurately, and the removal will be expected to reduce the likely injury to the local structures.…”

Tooth multi-sectioning with the use of magnification, for extraction of a deeply impacted lower second molar with entrapment of the inferior alveolar nerve: Report of a case

“…Separation of the proximal root in two segments Figure 3F. Removal of the small upper fragment risk during surgery 10 . Although a CT scan may be more accurate than panoramic radiography, it is not routinely used as for preoperative third molar diagnosis 17 .…”

“…In these cases, a further radiological examination with cone beam computed tomography (CBCT) may be recommended to justify the relation of the roots of the impacted tooth to the IAN in 3-dimensional view 9 . Even though CBCT is not more accurate in predicting exposure of the IAN during third molar surgery, it still helps to elucidate the precise buccolingual relation of the IAN to the roots of the impacted teeth 10 .…”

Reliability of Panoramic-Radiograph to Determine the Position of Third-Molar from Inferior-Alveolar-Canal

“…There are several radiographic approaches which have been used for preoperative assessment of the relationship between the roots of mandibular-third-molar to the IAC (Ghaeminia et al 2009). Panoramic radiography has been used as a common diagnostic modality in dentistry, including the assessment of the impacted mandibularthird-molar.…”