Periodontal disease is the natural progression of gum disease. This dental condition starts out as gingivitis and then progresses to become the more serious periodontitis. If left untreated, this becomes advanced periodontitis, which causes teeth to become loose and even fall out.
The primary cause of gum disease is a lack of proper care of the teeth. Ordinary brushing and flossing of the teeth helps remove the bacteria (plaque) from the surfaces of the teeth that cause cavities and inflammation of the gums. When performed regularly, it helps to protect your teeth and gums.
When the plaque is not removed, it will harden over time and form tartar. The bacteria fill the tartar, which forms above and below the gum line. Whenever the bacteria come in contact with sugar it produces acid. The acid erodes the enamel on your teeth and also causes an immune system reaction in your gums. This produces inflammation, which starts gum disease. As the bacteria and the immune system interact with each other, the tissue in your gums, as well as the structures that support your teeth, and your jawbone, are slowly eroded away.
As the inflammation continues to spread, the damage to your teeth and gums becomes worse. Gum pockets will form on your gums as they recede, and the bacteria will build colonies inside. The pockets protect them from the reach of a toothbrush and floss.
Once it reaches this stage, only the help of a special dentist (periodontist) will enable you to get rid of periodontitis. Periodontal surgery is necessary to eradicate the disease and save the teeth. As the bacteria continue to increase, your teeth will become loose, and will eventually fall out. Once periodontitis reaches a certain stage, it usually becomes necessary to pull all the teeth.