Gingivitis

Periodontal diseases are infections of the structures around the teeth. Also known as gum disease, it often begins as a buildup of plaque on the tooth's surface near the gum line. These include the gums, the cementum that covers the root, the periodontal ligament, and the alveolar bone. In the earliest stage, gingivitis, only the gums are affected. In more severe cases, all of the supporting tissues are involved.

Often times gum infection begins as a buildup of plaque on the tooth's surface near the gum line. If this buildup is not removed by brushing and flossing, it can harden into tartar. Over time plaque begins to buildup over the tartar eventually causing the gums to become red, swollen and irritated. This stage is known as gingivitis and is the first stage of periodontal disease. Left untreated, this will progressively get worse and may require surgery to treat.

Treatment

Professional dental cleaning. 
Dental restoration, 
Ongoing care. Gingivitis usually clears up after a thorough professional cleaning — as long as you continue good oral hygiene at home. Your dentist will help you plan an effective at-home program and a schedule of regular professional checkups and cleaning.

If you're consistent with your home oral hygiene, you should see the return of pink, healthy gum tissue within days or weeks.