Everyone has bacteria in their mouth. Bacteria combine with many of the foods we eat and cause acids to form in our mouths. If we do not pay attention to our oral hygiene, these acids damage our teeth and cause cavities on the upper layer of the teeth (enamel). If the cavities in the upper layers of the tooth are not treated, these cavities pass into the lower layer (dentin) of the tooth.
If the caries is not treated again, this time microorganisms cause inflammation by destroying the pulp layer and the vessels and nerves in it. As a result of any impact (trauma) to the tooth, it can cause the tooth nerves to rupture and damage, thus causing inflammation. The treatment of these types of diseases in the tooth can only be done by applying root canal treatment.