pyorrhea

inflammation of the periodontium, usually caused by specific pathologic bacteria that grow in the spaces between the gum and lower part of the tooth crown, and the host response to inflammation. If it continues unchecked the infection will spread to the bone in which the teeth are rooted. The bone then resorbs and the teeth slowly become detached from their supporting tissues. Periodontitis is the major cause of tooth loss after the age of 35. It can be prevented or controlled by good dental hygiene such as proper brushing and interdental cleaning, or by nonsurgical or surgical periodontal therapy. It is treated with local cleansing and débridement of the area, establishment of drainage for exudate, and use of antimicrobial agents. Antibiotic drugs and host modulating therapy are indicated if the symptoms are severe and unresponsive to other treatments. Extraction of the affected teeth may be necessary if the lesion is advanced.