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Disease / syndrome / tumor / condition
Region of interest
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1. History of genioglossus advancement procedure
A horizontally oriented, rectangular shaped defect is evident in the anterior mandibular body, between the mandibular left and right canine regions. A vertically oriented, rectangular shaped block of bone is centered and fixated along the buccal aspect of this defect by a single fixation screw. Two large osseous defects remain within the anterior mandibular body, on either side of this block of bone, which extends through and through. These findings are consistent with the reported history of genioglossus advancement procedure. The fixation apparatus exhibits a normal post-treatment appearance, and the advanced block of bone appears osseointegrated with the remainder of the anterior mandibular body.
Axial views of the anterior mandible
These axial cross-sectional images demonstrate the presence of two large osseous defects located within the anterior mandibular body, which extend through and through.
Buccolingual views of anterior mandible
These buccolingual cross-sectional images demonstrate that the advanced genial bone block appears osseointegrated with the remainder of the anterior mandibular body. However, this advanced bone block appears relatively thin, measuring between 3-7 mm in thickness. This could increase the risk of mandibular fracture.
Coronal views of the anterior mandible
These coronal cross-sectional images demonstrate the presence of a rectangular defect in the anterior mandibular body, between the left and right mandibular canine regions. A single fixation screw is evident along the superior aspect of the mandibular body, which was likely used to stabilize the genial block.
Enlarged nasopalatine duct
There is focal enlargement of the nasopalatine canal. The greatest mesiodistal and buccolingual dimensions are 5.6 mm and 5.0 mm, respectively. These dimensions are at the upper limits of normal. This could represent a variant of normal anatomy or suggest the possibility of a developing nasopalatine duct cyst. A follow-up radiographic examination in 12 months is recommended to assess if there is any propensity for growth.
2. Internal resorption in tooth 43
There is a well-defined enlargement of the coronal third of the root canal system of tooth 43. This finding is suggestive of internal resorption. There are no radiographic signs of endodontic pathology in association with tooth 43, despite this finding.
Generalized periodontal bone loss + calculus
There is generalized moderate to severe horizontal bone loss involving the imaged dentition. Calculus deposits are evident in the interproximal regions of the imaged dentition. The mandibular incisors are almost devoid of osseous support.