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Impacted / delayed / malpositioned / extra teeth
Region of interest
CBCT of posterior left maxilla. please assess proximity of roots of 26 and 27 to maxillary sinus. please assess if teeth 26 and 27 are ankylosed. 26/27 infraerupted-> access for extraction vs exposure body
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1. Possible ameloblastic fibroma in pericoronal region of tooth 27
Low-density granular bone is present in the pericoronal region of tooth 27. This low-density bone is continuous with the follicle surrounding the crown of the tooth, and appears to be a contributing factor to the impaction of the fully developed tooth. No signs of ankylosis are present at tooth 27. The periodontal ligament space appears to be of uniform width around the entire root circumference of the tooth. The impaction of a non-ankylosed tooth for no apparent reason is suggestive of the presence of an ameloblastic fibroma.
Impacted tooth 27: no ankylosis present
Tooth 27 is vertically impacted in the maxillary alveolar process due to the possible presence of an ameloblastic fibroma in the coronal region of the tooth. The crown of tooth 27 is positioned distal to the cementoenamel junction level of tooth 26. Tooth 27 has not caused damage to the distal surface of tooth 26. The periodontal ligament space is of uniform width around the roots of the tooth and the lamina dura is intact. No signs of ankylosis are present. The roots of tooth 27 are almost fully formed, and have displaced the overlying maxillary sinus floor.
Impacted tooth 26: possible ankylosis
Tooth 26 appears vertically impacted. The distal displacement of the crown of tooth 25 to the mesial aspect of site 26, as well as the absence of a visible periodontal ligament space on the furcal surface of the mesiobuccal root of tooth 26 may be contributory sources of impaction of tooth 26. It is possible that the tooth is ankylosed. The crown of tooth 26 is positioned apical and distal to the crown of tooth 25, but no resorption is present on the tooth. The roots of tooth 26 are fully formed, and have caused significant displacement of the maxillary sinus floor. The crown of tooth 26 has emerged through the alveolar crest, which suggests that it is not affected by any pericoronal pathology.
Displaced tooth 25
The crown of tooth 25 has been distally displaced into the mesial aspect of site 26, which may be a contributory source of impaction of tooth 26. There is no evidence of resorption in tooth 25. The crown of tooth 26 is located apical and distal to the crown of tooth 25.
2. Left antral pseudocyst
An antral pseudocyst is present within the left maxillary sinus. This represents an incidental finding with no clinical significance.