Maxillary Sinus Drainage Site

Dental-origin sinusitis is often , foul-smelling discharge, and fails standard medical therapy until dental source is removed.

Anatomically, the natural ostium is situated high on the medial wall. This positioning makes the maxillary sinus uniquely susceptible to stagnation; when mucosal inflammation (edema) occurs in the narrow osteomeatal complex, the high drainage port becomes easily obstructed, leading to fluid retention and potential sinusitis. Effective surgical intervention often focuses on widening this natural ostium to disrupt this cycle of obstruction. maxillary sinus drainage

The roots of the upper teeth sit near the sinus floor; pressure here often feels like a toothache. Dental-origin sinusitis is often

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: Complete sinus opacification with lateral retraction of sinus walls suggests mucocele – a closed system with continued mucus secretion → bone erosion possible.