PMC4068067_01
Panoramic radiograph revealing superimposition of left upper third molar and left maxillary sinus (red arrow).
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An orthopantomogram (OPG) was requested as an overview of the state of the patients' dentition (Figure 1).
Sagittal view of the CT-scanner showing hyperdense material in the floor of the left maxillary sinus consistent with an ectopic third molar.
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A computed tomography (CT) scan was arranged (Figure 2) which showed a hyperdense structure in the floor of the left maxillary sinus which was consistent with an ectopic third molar. The crown showed either no or very little mucosal covering on its cranial aspect (Figure 2).
Vestibular incision extending to the left maxillary tuberosity (a), creation of a bony window in the anterior wall of the left maxillary sinus (b), and ectopic third molar showing complete crown but incomplete root formation (c).
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A mucoperiosteal flap was raised in the region of the permanent first, second, and third molar and extended to the left maxillary tuberosity (Figure 3(a)), a small window to access the sinus was created (Figure 3(b)), and the ectopic tooth was extracted through that window (Figure 3(c)).