Banach J
Medizinischen Akademie Szczecin.
Stomatol DDR. 1990 May;40(5):203-5.
I have investigated twice during a span of 2.5 years, the state of periodontium in female students of secondary schools in Szczecin. The second examination has revealed a narrowing of the attached gingiva in 50.5% of the subjects, without change in the state of periodontium, as represented by the Russell's index.
在2.5年的时间跨度内,我对什切青市中学女生的牙周状况进行了两次调查。第二次检查发现,50.5%的受检者附着龈变窄,而用罗素指数表示的牙周状况没有变化。