[Consensus of Chinese experts on diagnosis of severe periodontitis and treatment principles of periodontitis in special population].

Today, there is greater awareness about periodontal diseases amongst Chinese dental clinicians. However, confusions regarding some clinical conditions have been remained in diagnosis and treatment of periodontal disease. Therefore, the Chinese Society of Periodontology undertook the formation of consensus in order to provide perspective to the dental clinicians and to help them in evaluation of the patient's risk factors, so as to make a better treatment decisions in their clinical practice. In the present consensus report, the diagnosis of severe chronic periodontitis at individual level and treatment recommendations of patients with systemic diseases and specific conditions, such as diabetes, hypertension, tumour, period of pregnancy, and the aged, were provided.