Dental Sinusitis – When Tooth Problems Cause Sinus Pain

Dental sinusitis (maxillary sinusitis of dental origin) occurs when infection from an upper tooth or the surrounding gums spreads into the maxillary sinuses. Because upper molar roots sit close to the sinus floor, even small dental infections can lead to sinus inflammation with facial pressure, nasal congestion, and pain on chewing. Headaches often worsen when leaning forward.

Key Symptoms

• One-sided facial pressure or nasal blockage
• Toothache in upper molars radiating to cheek or eye
• Tender, swollen gums near the affected tooth
• Sensitivity to temperature or biting

Early Detection

Accurate diagnosis relies on clinical exam plus digital X-rays or CBCT to confirm the dental source. Early imaging shortens recovery and prevents recurrent sinus issues.

Treatment at Gloss & Floss

• Root canal therapy to remove infected tissue and seal the tooth
• Tooth extraction when the tooth cannot be saved
• Antibiotics when indicated to control acute infection
• Close coordination with ENT specialists for complex cases

Our integrated plan targets the dental infection first so sinus symptoms resolve fully and don’t return.

Learn more in our guide: https://www.gloss-floss.se/en/dental-sinusitis-guide/