目的研究健康青少年口腔优势菌产生过氧化氢的能力。方法采用过氧化物酶法,在体外测得健康青少年口腔优势菌产生过氧化氢的量。结果在需氧条件下,能产生过氧化氢,产生的量与细菌的生长速度成正比;在厌氧条件下,未测得过氧化氢的产生。结论健康青少年口腔优势菌产生过氧化氢的能力强于S.sATCC10556(P<0.05) Objective To study the ability of oral lipids of healthy adolescents to produce hydrogen peroxide. Methods Peroxidase method was used to measure the amount of hydrogen peroxide produced by the oral dominant bacteria in healthy adolescents in vitro. Results In aerobic conditions, hydrogen peroxide was produced and the amount produced was proportional to the growth rate of the bacteria; no hydrogen peroxide was detected under anaerobic conditions. Conclusions The ability of oral predominant bacteria of healthy adolescents to produce hydrogen peroxide is stronger than that of S.satcc10556 (P <0.05)