Symptoms
Sinus and Nose
The roots of the upper back teeth sit against the floor of the sinus, so a problem that starts in a tooth can be felt in the nose, and one that starts in the sinus can be felt in a tooth. These pages help you tell them apart.
Sinus and Nose
- Postnasal Drip: Why Mucus Runs Down Your ThroatMucus running down your throat can come from the sinuses, allergy, reflux or an upper tooth. What one-sided, foul-smelling drip suggests and when to get help.
- Bad Smell in the Nose: Is It the Sinuses or a Tooth?A bad smell from the nose can come from the sinuses, an upper back tooth, an object in a child's nose or a changed sense of smell. Home checks and urgent signs.
- Pain Around and Behind the Eye: Sinuses or a Tooth?Pain around the eye can come from the sinuses, migraine, cluster headache or a tooth. What each type of pain suggests, and which eye signs need same-day care.
- Oroantral Fistula: A Hole into the Sinus After ExtractionAn opening between mouth and sinus after an upper back tooth extraction: which ones close on their own, which need surgery, and when an implant can be placed.
- Water Coming Through Your Nose: Oro-Antral OpeningAfter an upper molar extraction, water coming through the nose means an opening into the sinus: why it happens, whether it closes, when surgery is needed.
- Can a Blocked Nose on One Side Come From a Tooth?If one side of your nose is blocked and smells bad, the source may be an upper molar: the signs of dental sinusitis, who to see, and the role of a CBCT scan.