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Region of interest
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Reduction in size of pericoronal lesion at tooth 48 in 5 year interval
The prior scan (Canaray Case 36992, dated 4 September 2013, shown in pinkscale) was overlaid on the current scan (shown in greyscale). the regions of bone formation in the pericoronal region of tooth 48 are shown in grey. The pericoronal cystic lesion associated with tooth 48 has diminished in size in the five year interval between scans. The tooth has not moved or otherwise changed in the time interval. Tooth 47 also has not significantly changed in the time interval between scans
Right mandibular nerve buccal to tooth 48M+D
The impacted tooth 48 is horizontally oriented, and is in slight buccoversion. The follicle surrounding the crown of the tooth is hyperplastic. Root formation is complete. Ankylosis appears to be present. Hypercementosis is present around the roots of the tooth.
The right inferior alveolar nerve canal passes buccally to the coronal third of the mesial root of tooth 48, and is moderately compressed. The nerve passes buccally to the coronal half of the distal root of the tooth and is moderately compressed. The mesial and distal roots of the tooth are positioned at the lingual mandibular border.
The adjacent tooth 47 does not exhibit caries, resorption, or displacement.
Axial views of the posterior 4th quadrant
These axial cross sectional images of the posterior 4th quadrant demonstrate the buccal passage of the nerve relative to the mesial and distal roots of tooth 48. Note the positions of the mesial and distal roots of the tooth at the lingual mandibular border.
Mesiodistal views of posterior 4th quadrant
These mesiodistal cross sectional images of the posterior 4th quadrant demonstrate the horizontal orientation of the impacted tooth 48 and the hyperplastic follicle surrounding the crown of the tooth. The adjacent tooth 47 does not exhibit caries, resorption, or displacement.
2. Secondarily affected tooth 47D
The lesion associated with the crown of the impacted tooth 48 abuts the distal surface of the apical half of the distal root of tooth 47. This lesion extends slightly into the periapical region of the distal root. The remaining periradicular bone appears normal. There are no signs of a root fracture.