[Diseases of the maxillary sinus: an overview].

Because of the intimate relationship between the maxillary teeth and the maxillary sinus, it is no surprise that odontogenic infections, odontogenic cysts and tumours which have their origin in the mucosa and the bone of the maxilla may extend into the maxillary sinus and, occasionally, into the nasal cavity. Diseases of the maxillary sinus can also extend into the oral cavity and can cause symptoms that mimic those of odontogenic diseases. Important diseases of the maxillary sinus are maxillary sinusitis, oroantral communications, antroliths, cysts and neoplasms.