Gingivitis is the earliest stage and affects only the gum tissue. At this stage, the disease is still reversible. If not treated, however, it may lead to a more severe condition.
Periodontitis is a more advanced stage of periodontal diseases. The gums, bone and other structures that support the teeth become damaged. Teeth can become loose and fall out – or may have to be removed. At this stage, the disease may require more complex treatment to prevent tooth loss.
Advanced Periodontitis is present when the teeth lose more attachment because the supporting bone is destroyed.