This is an extension of the scaling procedure only wherein if cleaning has not been done for the long time, deposits seep into the gums and accumulate on the roots of the teeth. This results in recession of gums where the gum line moves away from the teeth surface thereby exposing the roots and causing severe sensitivity. This also results in loose or mobile teeth and finally loss of teeth. In such cases a thorough cleaning extending subgingivally or under the gum margin is required in order to save the teeth…