16/08/2025
For new bds doctors who are interested to learn CBCT . Drop your question in comments.
CBCT Findings of the Right Side of the mandible :
1. Tooth 48 Impaction:
o Tooth 48 shows distoangular impaction with two identifiable roots (mesial and distal).
o Both roots are fused apically.
o Adequate buccal and lingual cortical plates are preserved surrounding both roots.
o The distal root shows a slight lingual curvature, and its apex is traversed by the inferior alveolar nerve (IAN), which is located inferiorly and lingually in relation to the root.
o The mesial root apex has the IAN located lingually, but not in contact with it.
2. Periapical/Pericoronal Radiolucency:
o A poorly defined, multilocular radiolucent lesion is noted distal to tooth 48.
o The lesion measures approximately 20.79 mm mesiodistally and 17.00 mm superoinferiorly & mostly confined within the cancellous bone.
o There is no associated buccolingual expansion or cortical plate breach.
o The lesion involves the ipsilateral IAN canal, with:
Loss/interruption of the inferior cortical boundary at focal areas.
Thinning of the superior cortical boundary without displacement.
o The lower border of the mandible remains intact.
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Impression:
• Impacted 48 in distoangular position, with fused roots apically.
• Close proximity and intimate relationship of the distal root apex to the IAN, with the nerve traversing the root apex, suggesting a high-risk relationship for potential neurosensory complications if surgical extraction is considered.
• Presence of a poorly defined radiolucent lesion distal to tooth 48 involving the IAN canal,
Differential Diagnosis:
• Odontogenic Keratocyst (OKC)
• Ameloblastoma
