A little bit of acidity from grinding your teeth too much usually gets better gradually, but there are cases where the feeling of acidity in your teeth persists. 1. The outer layer of the tooth is a protective layer of enamel, which is very hard and does not contain neurosensory fibers. Underneath the enamel is dentin, which is able to conduct external stimuli to the dental pulp, resulting in acidic and painful sensations in the teeth. 2. Teeth grinding more than a little bit of acid that is to say that there is dentin exposure, generally will gradually form restorative dentin, reactive dentin, etc., so the feeling of acid will gradually get better. However, there are cases where the feeling of acidity persists. If there is no recovery for a long time, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.