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Wisdom Teeth Removal and Sinus Complications: What to Expect

The maxillary (upper) wisdom teeth roots often lie close to or penetrate the maxillary sinus floor. Extraction can create an oroantral communication (OAC) or exacerbate sinusitis.

Anatomy & Risk Factors

Proximity: Root tips may be <1 mm from sinus membrane; sometimes perforate it.
Risk factors: Long/curved roots, thin sinus floor, pre-existing sinusitis, difficult extraction requiring bone removal.
Incidence: OAC in 0.5–5% of upper molar extractions; higher for 3rd molars.

Symptoms of Sinus Involvement

Air/fluid passage between mouth and nose (blowing nose → air from socket)
Unilateral nasal congestion, discharge (may be bloody)
Sinus pressure/pain (cheek, infraorbital)
Altered taste/smell
Persistent bad taste

Management

Sinus Precautions (Post-Op, 10–14 Days)

No nose blowing (sneeze with mouth open)
No straws, smoking, wind instruments, Valsalva
Soft diet; chew opposite side
Head elevated sleeping
Prescribed antibiotics/steroids as directed

Recovery Timeline

Simple extraction: 3–7 days for soft tissue; bone fills in weeks.
With OAC repair: 2–4 weeks for mucosal healing; avoid pressure changes.
Chronic sinusitis: May need ENT if persistent >4 weeks.

When to Contact Surgeon

Persistent air/fluid communication >3 days
Worsening sinus pain, fever, purulent discharge
Numbness (lip/chin/teeth) — possible nerve injury
Uncontrolled bleeding

Bottom line: Most upper wisdom tooth extractions heal uneventfully. Sinus communication is a known, manageable complication. Follow precautions religiously; report symptoms early.

Root Canals - Related Articles

Scenario	Treatment
Membrane intact, no OAC	Standard post-op care; monitor
Small OAC (<2 mm), recognized intraop	Suture closure, collagen plug, antibiotics, sinus precautions
Large OAC (>5 mm) or delayed diagnosis	Surgical closure (buccal fat pad flap, palatal flap), ENT referral
Sinusitis triggered	Antibiotics (amoxicillin-clavulanate), decongestants, saline irrigation