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以往的研究表明,SnF_2不仅有防龋作用,而且能减少菌斑的形成。用SnF_2漱口能明显减少牙菌斑和唾液中变形链球菌的量,增加菌斑中韦永氏球菌的量,但其作用随时间而减弱。许多研究曾证明用NaF漱口不能减少菌斑和唾液中变链的量,从而提示似乎不是氟化物而是锡引起变链量的减少。本文作者研究了14～17岁的88名受试者,他们每天用0.1%SnF_2液或0.05%NaF液漱口达28个月(F浓度一致),SnF_2组46人,NaF组42人。实验前记录菌
Previous studies have shown that SnF_2 not only has anti-caries effect, but also can reduce the formation of plaque. Swabbing with SnF_2 significantly reduced the amount of Streptococcus mutans in plaque and saliva and increased the amount of C. difficile in the plaque, but its effect diminished over time. Numerous studies have demonstrated that gargle with NaF does not reduce the amount of chaos in plaque and saliva, thus suggesting that it does not appear to be fluoride but that tin causes a decrease in the amount of chaining. The authors studied 88 subjects 14-17 years of age who rinsed mouth with a solution of 0.1% SnF 2 or 0.05% NaF for 28 months (F concentrations were consistent), 46 in the SnF 2 group and 42 in the NaF group. Record bacteria before experiment