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Disease / syndrome / tumor / condition
Region of interest
17/18 R maxilla (post area)
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1. History of trauma to torus at tooth 17P
Two tori are present in the alveolar process at site 17. A well-defined square notch is present in the distal torus at this site, which is suggestive of trauma, possibly from a biopsy. No soft tissue overlies this notch in the bone. The underlying bone has the same density as cortical bone, but does not exhibit any signs of pathology.
2. No signs of inflammation of gingivial tissue at site 17
The gingival tissue that surrounds the defect in the torus at the palatal aspect of tooth 17 appears normal and healthy, which suggests that the lesion is longstanding.
Coronal views of tooth 17
These coronal cross sectional images demonstrate the sclerotic appearance of the torus at the palatal aspect of the alveolar crest at site 17. Removal of the torus may be necessary in order to address the defect in the gingival tissue at this site.
Axial views of posterior first quadrant
These axial cross-sectional images demonstrate the normal appearance of the torus palatal to tooth 16, as well as the absence of attached gingiva with the torus palatal to tooth 17. Tooth 16 exhibits diffuse external resorption.
3. External resorption of tooth 16
Tooth 16 exhibits a diffuse region of external resorption adjacent to the mesial furcation. The origin of this resorption is the mesial surface of the palatal root of the tooth.
Axial views of tooth 16
These axial cross-sectional images demonstrate the diffuse resorptive defect that extends through the midroot region of the palatal root of tooth 16.