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Disease / syndrome / tumor / condition
Region of interest
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1. Complex odontoma associated with tooth 47
Tooth 47 is vertically impacted. There is a collection of radiopacities located pericoronal to this tooth, which demonstrate densities comparable to enamel, dentin, and pulp canal system. Some of these radiopacities appear to be organized into small, teeth-like structures. These findings are consistent with the presence a complex odontoma associated with tooth 47, which is the likely cause of impaction of this tooth. The right inferior alveolar nerve canal passes immediately lingual to the cemento-enamel junction region of tooth 47, and appears mildly compressed by this tooth. The distal root of tooth 47 appears malformed and directly attached to the complex odontoma. The periodontal ligament space surrounding the root circumference of tooth 47 is visualized, which suggests that it is not ankylosed. Mild intracoronal resorption is also evident in the crown of this tooth. Tooth 47 has not caused any resorption of the adjacent tooth 46. Surgical excision of the complex odontoma is curative.
Axial views of tooth 47
These axial cross-sectional images demonstrate the lingual passage of the right inferior alveolar nerve canal relative to the cemento-enamel junction region of tooth 47. The periodontal ligament space lining the root circumference of tooth 47 is visualized, which suggests the absence of ankylosis.
Buccolingual views of tooth 47
These buccolingual cross-sectional images demonstrate that the buccal cortex adjacent to the crown of tooth 47 appears thinned by its residual follicle, but remains intact. The contiguous lingual cortical plate appears normal and intact. The inferior mandibular cortex adjacent to the root apices of tooth 47 appears significantly thinned, but intact.
Mesiodistal views of tooth 47
These mesiodistal cross-sectional images demonstrate the presence of a large collection of radiopacities located pericoronal to the vertically impacted tooth 47. These radiopacities demonstrate densities comparable to enamel, dentin, and pulpal tissues, and some of these radiopacities are organized into small denticles. These findings are consistent with a complex odontoma. Note that the distal root of tooth 47 is directly attached to the odontoma. There is no evidence of root resorption in the adjacent tooth 46.
Absent tooth 48
Tooth 48 appears to be developmentally absent. It may be possible that the dental lamina of tooth 48 is partially fused with tooth 47, and has contributed to the development of the odontoma.