Periodontitis
Once plaque begins to form in the pocket, it is protected against most forms of oral hygiene. As plaque moves into the once healthy gum pocket, the infection begins to involve the place where the ligament attaches the gum to the tooth surface. Infection here is bad enough by itself, but the whole process is made even worse by the formation of subgingival calculus. As the calculus grows and spreads, it pushes against the swollen