Inflammation of the maxillary sinuses can cause the walls of the sinus cavity to press against the adjacent roots of the upper back teeth, blocking the nasal passages. This pressure can often lead to toothaches. The increased pressure build-up inside the sinus cavity that triggers toothache is caused when the airflow into the sinus cavity is restricted.
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Toothaches are generally caused due to dental problems, such as periodontal disease, tooth grinding, cavities or dental abscesses. However, a sinus toothache is a type of tooth pain caused by an inflammation of the maxillary sinus (sinusitis) or a sinus infection. Sinus pressure or infection can cause pain especially in the upper rear teeth, which are close to the sinuses.
Diagnosing Sinus Infections as the Cause of Toothache
A sinus toothache is not always easy to identify as the pain is similar to that of a common toothache. In order to diagnose sinus infections as the cause of toothache, a percussion test is performed by a dentist whereby he will gently tap on an individual tooth to establish where the pain is located. Pain located in all of the teeth signifies a sinus-related infection .
An increased tooth pain observed with any form of movement that usually subsides when you are sitting or lying down is another characteristic of a sinus toothache. This is due to the movement of fluid in the maxillary cavity which will cause a throbbing pain in one or more upper teeth.
What Causes A Sinus Infection Toothache?
The maxillary sinuses are located inside the cheekbones above the upper jaw. Inflammation of the maxillary sinuses can cause the walls of the sinus cavity to press against the adjacent roots of the upper back teeth due to the heightened swelling of the mucus lining, blocking the nasal passages. This pressure can often lead to toothaches that can be similar to the pain associated with a normal dental problem. The increased pressure build-up inside the sinus cavity that triggers a sinus toothache is usually caused when the airflow into the sinus cavity and the drainage of the mucus out of the sinus cavity is restricted.
In some cases a dental problems such as tooth abscess in the upper molar teeth and especially the wisdom teeth that are usually closer to the sinus cavity can also be a cause of sinus toothache. In this case, bacteria may spread from the periapical area (around the tooth roots) to the sinus causing infection and sinus toothache .
Natural Treatments for a Sinus Toothache
There are a number of natural herbs that can eliminate all of the symptoms of a sinus infection, including toothache.
Garlic: The bacteria that cause sinus infections are highly vulnerable to garlic. Chewing a clove of garlic or rubbing fresh garlic cloves directly to an aching tooth can even help relieve pain.
Ginger root: Ginger root is another herb that can attack bacterial infections of the sinus while also reducing the inflammation behind sinus toothaches. Ginger roots have great anti-inflammatory properties and also have the ability to help you get relief from pain. Ginger fights the deep-rooted infection and helps the pain reduce.
Turmeric: Turmeric has anti-bacterial, anti-inflammatory, and anti-pain capacities, and it can be made into an easy-to-apply mouth paste when mixed with water.
Oregon grapefruit: Oregon grapefruit is still another excellent choice for treating sinus infection and the accompanying toothache. Oregon grapefruit is an extremely effective anti-bacterial treatment 
- Ranft, L. The Correlation between Tooth Pain and the Sinuses. Consumer Guide To Dentistry.
- Balasubramaniam, Ramesh, et al. “Non-odontogenic toothache revisited.” Open Journal of Stomatology 1.03 (2011): 92.
- Perry, M. How to Treat a Sinus Toothache?. HealthGuidance.org.