Periodontitis- gum, or periodontal disease - involves inflammation and destruction of the tissues supporting and surrounding the teeth, including the gums and supporting bone. Periodontitis destroys the periodontal ligaments or connective tissue fibers that attach the tooth to the bone causing resorption (destruction) of the alveolar bone (tooth socket). Consequently, the gums swell, redden, change shape, bleed, teeth loosen and pus forms. With the loss of soft tissue and bony support, deep periodontal pockets may form that foster bacterial growth. The sad thing about all this is the fact that there is no pain involved in the process.