Question: What is Periodontitis?
Answer: Periodontitis is the serious and advanced stage of gum disease which includes bone loss. Periodontitis is irreversible. The gum tissue and bone that surround and support your teeth could become seriously damaged and the teeth affected could become loose and fall out. Periodontitis occurs when the early stage of periodontal disease, gingivitis, is left untreated.
Some researchers have even suggested that gum disease can cause premature birth and low birth weight.More Dental Care Q&A