Tooth has only pain receptors. Tooth elicits only pain sensation for any kind of hurt because of its rich pain receptors.
Taking care of oral health is as important as caring for the overall health. Smile happily everyday with a healthy and happy teeth.
The tongue has a rich blood supply that can heal fast and quicker. In case of #non_healing_ulcers, be it with pain or not, seek medical support immediately to rule out #oral_cancer.