在过去的二三十年里,我们对牙周病病因和病理机制的认识有了很大进步,这为牙周病预防、诊断、治疗和预后判断措施奠定了基础。但百余年来,牙周病的治疗一直依赖于龈上、龈下环境中细菌沉积物的去除。目前已没有人怀疑菌斑微生物在牙周病发生发展中的重要性,但迄今并 In the past two or three decades, we have made great progress in the understanding of the etiology and pathogenesis of periodontal disease, which lays a foundation for the prevention, diagnosis, treatment and prognosis of periodontal disease. However, for more than a century, the treatment of periodontal disease has relied on the removal of bacterial deposits in the supragingullary and subgingival environment. At present no one doubts the importance of plaque microorganisms in the development of periodontal disease, but so far