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Case 122199

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Referral category

Disease / syndrome / tumor / condition

Region of interest

2nd quadrant posterior maxilla

Referral reason

[Only visible to logged-in users]

1 Files Info

Canaray 122199

Volume rendering of tooth 28

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1. Large dense bone island or localized zone of fibrous dysplasia in posterior 2nd quadrant

A localized enlargement of the maxillary alveolar process has occurred in the region of the left maxillary tuberosity. The sinus floor has been displaced in this region. The roots of teeth 26 and 27 do not appear to have been affected. However, tooth 28 has been posteriorly and superiorly displaced. No significant buccolingual expansion of the alveolar process has occurred. This represents a region of bone dysplasia, and could represent a large dense bone island or a localized zone of fibrous dysplasia. Regardless, there is no treatment for this entity. Tooth 28 will likely develop in an impacted position.

Axial views of posterior second quadrant

These axial cross-sectional images demonstrate the normal appearance of the periodontal ligament space around the roots of teeth 26 and 27. These teeth have not been affected by the dysplastic bone in the surrounding regions. The posterior and superior displacement of the unerupted tooth 28 by the dysplastic bone is evident in these images.

Buccolingual views of posterior second quadrant

These buccolingual cross-sectional images demonstrate the displacement of the posterior floor of the sinus and tooth 28 by the dysplastic bone in the posterior second quadrant. These images also demonstrate the absence of any significant buccolingual expansion of the alveolar process, as well as the normal appearance of the roots of teeth 26 and 27.

Mesiodistal views of posterior second quadrant

These mesiodistal cross-sectional images demonstrate the uniform periodontal ligament space around the roots of teeth 26 and 27, the displacement of the posterior sinus floor, and the position of tooth 28 in the posterior border of the left maxilla.

Normal tooth 27

Tooth 27 appears normal radiographically. The periodontal ligament space is of uniform width around the roots of the tooth and no signs of resorption are present. The sclerotic appearance of the bone that surrounds tooth 27 is evident in these images.

Normal tooth 26

Tooth 26 appears normal radiographically. The periodontal ligament space is of uniform width around the roots of the tooth and no signs of endodontic pathology are present. The sclerotic appearance of the bone distal to tooth 26 is evident in these images. The sinus floor remains intact adjacent to the tooth.

Vertically impacted tooth 28

Tooth 28 is vertically impacted in the posterior left maxilla. The tooth has been superiorly and posteriorly displaced by the sclerotic dysplastic bone in the left maxillary tuberosity. The follicle surrounding tooth 28 appears normal. This tooth has not had any effects upon the surrounding structures.