Maxillary sinus

The maxillary sinus (Sinus maxillaris) is carved within the maxilla but can extend to the palatine bone, the lacrymal bone, the zygomatic bone and annex dependancies of the ventral nasal conchae or of the sphenoidal sinus.

It is located rostrolaterally to the orbit and presents a remarkable relation with the infra-orbital duct, that follows it or passes through it back to front.as well as with the alveoli of the molar teeth.