The nasal cavity is connected to a pair of empty regions in your skull called the sinuses. The tissues in those areas become inflamed when you have sinusitis, which frequently results in pain. A pair of sinuses located over your upper jaw’s near teeth are the largest. The upper teeth’s roots are quite close to or may even reach the sinus cavity. As a result, pain in neighboring teeth may result from sinus inflammation. Similar to how tooth damage or tooth infection can cause prolonged sinusitis. So, tooth pain and sinus infection are closely related.
Sinus physiology
The body contains a number of sinuses. The paranasal sinuses are those that are close to the nose. But you also have dural venous sinuses, which are sinuses in your brain.
There are four pairs of these sinuses located in the facial bones behind the cheekbones, on the forehead, and next to the eyes. The air in your nasal cavity is warmed, moistened, and filtered by them. Mucus from the sinuses also enters the nasal cavity and cleans the nose.

Infection is possible when fluid obstructs these regions. When you cough or blow your nose, bacteria might enter the region and cause an infection.
Your upper teeth may feel uncomfortable or painful as a result of the pressure and mucus that come with a sinus infection. This is so because your sinuses are close to the roots of your upper teeth and jawbone. Your lower teeth may occasionally become uncomfortable as well.
Tooth pain types: sinus versus common
Many common tooth pain symptoms are also present in sinus toothaches. However, sinus tooth pain affects multiple teeth rather than just one and is typically felt in the upper molars.
Your toothache may be caused by a sinus infection if it is accompanied by some of the symptoms listed below and you are experiencing pain in these teeth. Also, you might feel a little lethargic or run a temperature.
It is likely that the only source of pain will be a toothache brought on by dental issues, and it may be more severe and concentrated.
A certain kind of movement may make a sinus tooth pain worse. Jumping up or stooping down could aggravate the pain. The sinus pressure changes as you move, which causes this. When you’re lying or sitting down, the pain can go away.
Can your eyes be affected by a sinus infection?
Absolutely, your eyes can be impacted by a sinus infection. Face soreness, especially around the nose bridge or beneath the eyes, might be a symptom of a sinus infection. Moreover, pressure beneath the eyes is a possibility and it gets worse when you stoop. Your optic nerve may be impacted by congestion or pressure in your sinus cavities.

The soft tissues and bones surrounding the face and eye sockets may also get infected by a sinus infection. When a sinus infection gets bad enough, it can lead to consequences like a skin infection on the face and spread to the tissues around the eyes. Antibiotics are often used by doctors to treat this form of infection.
If you have facial pain, pressure, or eye puffiness for more than a few days, you might wish to see a doctor. Get a doctor as soon as possible if you are unable to open your eye, are experiencing eyeball movement, or notice a change in your vision.
Can sinusitis have an impact on your brain?
A sinus infection that extends to the dural sinuses near the brain can lead to a variety of issues. Although it is uncommon, irregularities or erosion of the sinus wall can cause a sinus infection to migrate to the brain via blood clots or bone.
How long does a tooth pain in the sinuses last?
A sinus infection normally lasts fewer than four weeks, depending on its severity. Acute sinusitis can last for four to twelve weeks. The symptoms of your infection could persist for more than 12 weeks if it becomes chronic.