Most toothaches happen because of pulpitis, an infection in the tooth. The pulp is the soft area in the center of the tooth that contains nerves and blood vessels. We can feel heat, cold and touch in our teeth because of the pulp in them. The pulp also causes pain when it becomes injured or infected.
CBD reduces pain and inflammation in an affected tooth by interacting with cannabinoid receptors. Some of these receptors have a link to the immune system and lower its response when they come in contact with CBD. Since our bodies create inflammation for immune purposes, the CBD reduces the inflammation they make—easing the pain and swelling associated with a toothache in the process.