Acute infections usually respond to medical management and irrigation.
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A. Symptoms and Signs: Because the maxillary sinus is the largest of the paranasal sinuses and its drainage into the nose is not fully dependent, it is the most commonly affected sinus. Pain and pressure over the cheek are the usual symptoms. Pain may refer to the upper incisor and canine teeth via branches of the trigeminal nerve, which traverse the floor of the sinus. It is not uncommon for maxillary sinusitis to result from dental infection, and teeth that are tender should be carefully examined for signs of abscess.
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In uncomplicated sinusitis with mild symptoms, outpatient management is usually successful. Oral decongestants, nasal decongestant sprays, and oral antibiotics are recommended. If purulent discharge is seen in the nose, it should be cultured. Because amoxicillin has better sinus penetration than ampicillin, it is an appropriate first
