There are a number of dental problems that can cause headaches, but the most common ones are gum disease and cavities.
This decay process irritates your gums, which in turn causes pain and inflammation.
Over time, this can lead to tooth loss and jawbone erosion, both of which can cause headaches.
When plaque accumulates inside your teeth, it becomes hard and brittle.
This causes pressure inside the tooth cavity, which in turn causes pain and discomfort.
Cavities also weaken the dental ligaments that support the teeth, which increases the risk of them falling out – leading to even more pain and headaches.