Examining the anatomy physiology and histology of the soft and hard tissues surrounding the teeth; It is a branch of science that studies the diseases that occur in these tissues, and ensures the treatment of these diseases and the continuity of the health obtained as a result of the treatment. 

Periodontological diseases are disorders of the gums and bone, which are the tissues surrounding the tooth. Periodontal diseases respond easily and successfully when diagnosed at an early stage. 

Gum diseases can progress without symptoms. In such cases, usually no pain is felt. After the progression of the existing inflammation, if the disease is not treated, it causes the length of the teeth to increase, sometimes the loss of the teeth and the melting of the bone that supports the tooth.