Cone-beam computed tomography evaluation of maxillary sinusitis.

Area of Science:

• Dentistry
• Radiology
• Otolaryngology

Background:

• Dental pain can mimic sinusitis, complicating diagnosis.
• Periapical lesions can lead to inflammatory sinusitis of the maxillary sinus.
• Odontogenic maxillary sinusitis requires accurate identification of its origin.

Purpose of the Study:

• To characterize odontogenic maxillary sinusitis on cone-beam computed tomography (CBCT) scans.
• To identify specific teeth and roots most commonly associated with this condition.
• To evaluate the diagnostic utility of CBCT in detecting sinus pathology and its dental causes.

Main Methods:

• Analysis of 82 CBCT scans exhibiting maxillary sinus pathology.
• Examination for sinusitis of odontogenic origin in both maxillary sinuses.
• Radiographic assessment of sinus floor integrity and mucosal thickening.

Main Results:

• 98 of 135 sinusitis instances were linked to dental issues, with 37 being non-odontogenic.
• Average mucosal thickening measured 7.4 mm.
• Maxillary first and second molars were 11 times more frequently involved than premolars; palatal root of the first molar was most implicated.

Conclusions:

• Over 50% of maxillary sinus changes are associated with periapical pathology.
• Maxillary first and second molars are the most common culprits in odontogenic sinusitis.
• CBCT is a valuable tool for diagnosing maxillary sinusitis and identifying its odontogenic sources.