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2. Root resorption on tooth 37D
The odontogenic cyst associated with the impacted tooth 38 has caused root resorption to the distobuccal aspect of the apical third of the distal root of tooth 37.
1. Odontogenic cyst associated with tooth 38
A well-defined unilocular radiolucent entity is present in the pericoronal region of the horizontally impacted tooth 38. The entity has caused mild lingual expansion and cortical thinning, and has resulted in posterior and inferior displacement of tooth 38. Apical root resorption is present on the distal root of tooth 37. This entity has displaced the mandibular nerve inferiorly and has mildly compressed the nerve. These radiographic findings are consistent with the presence of an odontogenic cyst associated with tooth 38. The possibility of an odontogenic keratocyst or a dentigerous cyst should be considered.
Left mandibular nerve buccal to tooth 38
The left mandibular nerve courses buccal to the apical third of the mesial and distal roots of the horizontally impacted tooth 38. No nerve compression by tooth 38 is present. The follicle surrounding the crown of tooth 38 is associated with a large pericoronal radiolucency. The periodontal ligament space is visible around the entire root circumference, which suggests that this tooth is not ankylosed.
Axial views of posterior 3rd quadrant
These axial cross-sectional images demonstrate mild lingual expansion and cortical thinning caused by the odontogenic cyst associated with tooth 38. The presence of root resorption on the distal root of tooth 37 is also apparent.
Coronal views of posterior 3rd quadrant
These coronal cross-sectional images demonstrate the inferior position of the left mandibular nerve relative to the pericoronal radiolucency associated with tooth 38. The nerve is mildly compressed.
Sagittal views of posterior 3rd quadrant
These sagittal cross-sectional images demonstrate the cystic enlargement surrounding the occlusal aspect of the crown of tooth 38, which has resulted in inferior and posterior displacement of tooth 38. The inferior alveolar nerve exhibits inferior displacement.
Right mandibular nerve apical and buccal to tooth 48
The right mandibular nerve courses apical and buccal to the mesial and distal root apices of the vertically impacted tooth 48. No nerve compression is present. The follicle surrounding the distal aspect of the crown of tooth 48 appears normal. The periodontal ligament space is not clearly visible around the entire root circumference, which suggests the possibility of ankylosis. Tooth 48 has not caused damage to tooth 47.
3. Left maxillary sinus mucositis
The maxillary sinuses are partially captured in this imaging volume. Mucositis of unknown severity is present in the left maxillary sinus.