Dental and Sinus Issues: Understanding Causes of Tooth Pain

Tooth pain experienced when biting down can stem from various dental or physiological issues. Sharp, fleeting pain often indicates structural problems within the tooth, such as cracks or loose fillings. Conversely, a lingering, throbbing ache may suggest issues with the pulp or the tissue surrounding the tooth root. Common causes include tooth decay that has reached the dentin layer, inflammation, or infection.

In some cases, pain in the upper back teeth may not be dental in origin but rather caused by sinus issues. Because the maxillary sinuses are located directly above the roots of the upper back teeth, inflammation or infection in these cavities can mimic a toothache. This proximity occurs because only thin layers of bone separate the sinus from the tooth roots, and in some individuals, roots may even extend into the sinus space.