A build-up of plaque and tartar can lead to inflamed and infected gums. Regular tooth brushing and cleaning between teeth (eg, by flossing) can usually prevent gum disease.
- Dental plaque @ Wikipedia
Excerpt: While plaque is commonly associated with oral diseases such as caries and periodontal diseases (gum diseases), its formation is a normal process that can’t be prevented. Its progression and build up is what leads to oral problems, hence why it is important to disrupt the mass of bacteria and remove it daily. Plaque control and removal is achieved with correct tooth brushing and use of interdental aids (such as dental floss, interdental brush, etc.)