Periodontal disease is one of the most common human diseases. Plaque, inflammation is considered to be the cause of periodontal disease. Periodontal disease is a multifactorial disease, no single factor can lead to periodontal tissue destruction, and even tooth loss. Maintained between bacteria and host intrusion defense function of a state of equilibrium, periodontal is in a healthy state. Internal and external factors can affect the balance of this dynamic. Exogenous factors (locality promoting factor), such as poor oral hygiene, poor dental calculus, food impaction, traumatic occlusion, iatrogenic factors, the point of contact, smoking and other endogenous factors (body promoting factors), such as adverse endocrine, metabolic disorders, immunodeficiency, chronic wasting disease, malnutrition, genetic factors, so that host resistance weakened, leading to periodontal tissue damage to susceptible bacteria and thus prone to periodontal disease. Also known as periodontal pocket blind bag, located around the teeth, periodontal tissue inflammation after formation. On the surface there is no dental periodontal pocket which must be oral with a sharp probe or special measuring periodontal pocket probe inspection in order to know whether the periodontal pocket and depth. A tooth can have several periodontal pocket, the medicine will be referred to the periodontal pocket buccal, lingual periodontal pocket, the periodontal pocket mesial, distal periodontal pocket. If further points down, the periodontal pocket can be divided into the bone and bone bags within bags and so on. Why should share the periodontal pocket so fine? Because the formation of periodontal pockets showed that the tooth had periodontitis, and periodontal pocket is so important symbol of the clinical diagnosis of periodontitis, inflammation results. So periodontal pocket is how did this happen? Generally considered periodontal pocket due to periodontal tissue by bacterial infection and stimulate local factors, especially plaque stimulate the gums, causing gum tissue inflammation and necrosis, inflammation constantly along the root the apical direction, so the formation of pathological capsular bag, at the same time causing the destruction of alveolar bone. This capsular bag easily accumulating food and bacteria that often cause bladder fester, the bag wall bladder symptoms such as swelling. So periodontal pocket and was said to be the gingival sulcus deepened. Periodontal pockets of granulation tissue is tissue that is easily inflamed tissue, so the periodontal pocket long-term recurrent infection, not self-healing. If it reaches the apical periodontal pocket, leading to tooth loss, periodontal pocket at this time to heal. Why when the presence of teeth, periodontal pockets are not self-heal it? Some people think that the periodontal pocket there is a substance that can destroy periodontal tissue. This substance was envisaged that osteoclasts, but after an experimental study of the periodontal pocket, has not yet found the presence of osteoclasts.
