近二十多年来,由于菌斑的结构和组成与牙周病、龈病的关系有了深入的研究,已使我们对牙周病的病因和发展的观念,有了很大的发展。大量的材料表明牙周病的主要类型系菌斑所引起的炎症。细菌乃牙周病发生的始动因子(Initiating factor)。全身因素,营养不良,食物的某种成份缺乏等,在牙周病的发展中仅占很小地位,属于促进因 In the recent twenty years, due to the structure and composition of plaque and periodontal disease, gingival disease has been in-depth study, we have made the concept of periodontal disease etiology and development, has made great progress. A large number of materials indicate the main type of periodontal disease caused by plaque inflammation. Bacteria are the initiating factor for periodontal disease. Systemic factors, malnutrition, the lack of certain ingredients of food, etc., in the development of periodontal disease occupies only a small place, is a contributing factor