牙菌斑是龋齿和牙周病重要的致病因素之一。因此为了预防和控制龋齿和牙周病,抑制牙菌斑的发生和发展是至关重要的。利用右旋糖酐酶抑制牙菌斑,近年来受到各国口腔医学研究的重视。国处已有这方面的一些报道。本研究利用中国科学院微生物研究所提供的右旋 Dental plaque is one of the most important causative agents of dental caries and periodontal disease. Therefore, in order to prevent and control dental caries and periodontal diseases, it is crucial to inhibit the occurrence and development of dental plaque. Inhibition of dental plaque by dextran in recent years by the dental research in all countries attention. The country has some reports in this area. This research uses the dextrose provided by Institute of Microbiology, Chinese Academy of Sciences