Periodontal disease causes the supporting tissue and bone around and below your teeth to become destroyed; over time, deep pockets develop and are breeding grounds for infection and decay. Eventually, if too much bone is lost, the teeth will need to be extracted. A regenerative procedure may be called for when the bone supporting your teeth has been destroyed. Regenerative procedures can reverse some of the damage by regenerating lost bone and tissue.The procedure involves folding back the gum tissue and removes the disease-causing bacteria. Membranes (filters), bone grafts or tissue- stimulating proteins can be used to encourage your body's natural ability to regenerate bone and tissue.