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Anatomy of the paranasal sinuses; drawing shows front and side views of the frontal sinus, ethmoid sinus, maxillary sinus, and sphenoid sinus. The nasal cavity and pharynx (throat) are also shown.

Front view illustration and side-by-side CT scans of normal and chronic sinusistis. Labeled: frontal sinus, ethmoid sinuses, maxillary sinus, nasal septum, eye socket. Credit: NIAID

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Periapical cyst | Radiology Case | Radiopaedia.org Periapical cyst associated with right maxillary sinusitis

Odontogenic sinusitis | Radiology Case | Radiopaedia.org Periapical cyst associated with right maxillary sinusitis

Maxillary odontogenic keratocyst | Radiology Case | Radiopaedia.org Dentigerous cyst containing a tooth within the right maxillary antrum with associated opacification fo the right maxillary sinus.

Dentigerous cyst | Radiology Case | Radiopaedia.org Dentigerous cyst containing a tooth within the right maxillary antrum with associated opacification fo the right maxillary sinus.

Odontogenic keratocyst | Radiology Case | Radiopaedia.org Well defined,expansile,corticated lucent lesion occupying the left maxilla,expanding into the left maxillary sinus.

LEGEND: F - Frontal sinuses, E - Ethmoid sinuses, M - Maxillary sinuses, O - Maxillary sinus ostium, SS - Sphenoid sinus ST- Superior turbinate, T - Middle turbinate, IT- Inferior turbinate, SM- Superior meatus, MM- Middle meatus, SR - Sphenoethmoidal recess, S- Septum, ET - Eustachian tube orifice, A - Adenoids . Courtesy of Astra Pharmaceuticals

Dentistry lectures for MFDS/MJDF/NBDE/ORE: Anatomical Landmarks Of Panoramic Radiographs......with ppt lecture note for download

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The maxillary sinuses are behind your cheeks and on top of the upper teeth. Sinuses are like empty rooms that have nothing in them. Some of the roots of the natural upper teeth extend up into the maxillary sinuses. When these upper teeth are removed, there is often just a thin wall of bone separating the maxillary sinus and the mouth. Dental implants need bone to hold them in place. When the sinus wall is very thin, it is impossible to place dental implants in this bone. There is a…

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