Abstract
Background:
The odontogenic infection might be related to the change of the sinus, which 10 % of maxillary sinusitis caused by it, but the real incident can be as high as 25 – 40 %, which is characterized by sinonasal inflammation with radiography, microbiology, and/or clinical evidence that indicate it is from the dental origin.
Discussion:
Clinical presentation from odontogenic sinusitis is similar to non-odontogenic sinusitis, but it is usually unilateral and not related to ostium obstruction. A proper clinical examination and radiography are needed for diagnosis. Odontogenic sinusitis is commonly caused by polymicrobial, which predominantly are anaerobic organisms. If odontogenic sinusitis is refractory to medical therapy, then usual definitive treatment for the underlying dental problem might be needed.
Conclusions:
Odontogenic sinusitis is usually a refractor to medical management because polymicrobial more commonly cause it, but anaerobe predominant nature can not be neglected. To diagnose it, we need systematic dental examination and radiography imaging. A multifaceted, individualized, and multidiscipline approach is important for the successful resolution of the disease.

Key words: Odontogenic sinusitis, maxillary odontogenic sinusitis, maxillary sinusitis, sinusitis, dental infections