Dental Sinusitis Treatment and Sinus Perforation Management in Stockholm

Dental sinusitis and sinus perforation are oral–sinus conditions that need prompt, precise care. Dental sinusitis occurs when bacteria from an infected upper tooth irritate the maxillary sinus. A sinus perforation (also called an oral–antral communication, OAC) can happen after an upper molar extraction when a small opening forms between the mouth and the sinus.
At Gloss & Floss Dental Care® in Södermalm, we offer clear diagnosis and modern treatment to stop infection, close openings, and restore comfort.

Key Symptoms to Watch For

• One-sided facial pressure or pain, especially over the cheek and upper jaw
• Nasal discharge or post-nasal drip with a bad taste
• Pain or tenderness in the upper back teeth when chewing or tapping
• Air or liquid passing between the mouth and nose after extraction (possible OAC)
• Persistent bad breath and a feeling of “blocked” sinus on one side

Common Causes

• Untreated cavities or deep infections that reach the tooth root
• Failed or incomplete root canal treatments
• Complications after the extraction of upper premolars or molars
• Chronic periodontitis affecting the upper teeth
• Previous surgical procedures in the sinus region

How We Diagnose the Problem

We begin with a focused dental and sinus history, gentle clinical tests, and imaging when needed.
Digital radiographs or CBCT(when needed) help us identify inflamed roots, hidden infections, or a small tract between the mouth and sinus. This careful approach lets us confirm whether symptoms are dental in origin and plan the right treatment from day one.

Dental Sinusitis Treatment

The goal is to remove the dental source and calm the sinus. Depending on findings, treatment may include:

• Cleaning and sealing the canals of the affected tooth (retreatment when indicated)
• Careful extraction of non-restorable teeth with protective measures for the sinus
• Targeted medications and sinus-friendly self-care instructions

When the infection resolves and the bone heals, tooth replacement can be planned. Options include dental implants or bridgework, tailored to your case.

Sinus Perforation Management (OAC / Oroantral Fistula)

A small opening may close on its own with protective measures. Larger openings require surgical closure to prevent a persistent oroantral fistula (OAF).

• Small OACs: atraumatic suturing, sinus precautions, and follow-up
• Moderate–large OACs: local flap procedures (e.g., Rehrmann/advancement flap) to seal the sinus
• Adjuncts: collagen membranes, PRF, and careful aftercare to support healing

Our team performs these procedures within our oral surgery service using minimally invasive techniques and modern materials.

Recovery and Aftercare

• Avoid nose blowing, sneezing with a closed mouth, and drinking through straws for 10–14 days
• Use prescribed rinses and medications as directed
• Sleep slightly elevated for the first few nights to reduce pressure
• Attend your review visit so we can confirm complete closure and healing

Planning Future Treatment

After full healing, we can discuss long-term restoration. If the upper jaw needs more bone volume for implant stability, a gentle
sinus lift may be considered at a later stage. Timing is patient-specific and always planned to protect the sinus.

When to Seek Urgent Care

Contact us urgently if you notice fluid passing from mouth to nose, persistent one-sided sinus symptoms after a recent extraction, foul taste with drainage, swelling, or fever.
If you are in acute pain out of hours, see our Emergency Dental Care information for guidance.

FAQ – Dental Sinusitis & Sinus Perforation

Is dental sinusitis different from a “regular” sinus infection?

Yes. Dental sinusitis starts from a tooth or gum infection and typically affects one side only. Treating the dental source is essential for long-term relief.

Can a failed root canal cause sinus problems?

It can. A poorly sealed or re-infected canal can irritate the maxillary sinus. Evaluation and retreatment or extraction may resolve symptoms.

How do I know if I have a sinus perforation after extraction?

Signs include air or liquid passing between mouth and nose, whistling when speaking, or fluid leaking from your nose when drinking. Call us for assessment if you notice any of these.

Do all sinus perforations need surgery?

Not always. Very small openings may close with protective measures. Openings larger than a few millimeters, or those that persist, are best closed surgically to prevent a fistula.

How long does healing take?

Most patients feel much better within days. Tissue healing after surgical closure generally takes 2–3 weeks, with full maturation over several weeks more.

Will this affect future dental implants?

Once the sinus is healthy and bone has healed, implants are often possible. If bone height is limited, a planned sinus lift can rebuild support before implant placement.

Should I see a dentist or an ENT specialist?

Start with a dental evaluation if pain is localized to upper teeth or follows an extraction or dental procedure. We coordinate with ENT colleagues when combined care benefits you.

What can I do at home to protect the sinus while healing?

Avoid nose blowing and heavy lifting, sneeze with your mouth open, follow your medication plan, and keep follow-up visits so we can confirm closure and recovery.