If gingivitis is left untreated, it can lead to inflammation around the tooth and is called ‘Periodontitis’. In Periodontitis, the inner layer of the gum and bone pull away from the teeth (recede) and form ‘pockets’ that are infected. Periodontal diseases range from simple gum inflammation to serious disease that result in major damage to the bones, gums, and connective tissue that support the teeth. In advanced cases the teeth eventually become loose and have to be removed.