This clinical trial of a daily 0.1% SnF2 mouthrinse involved over 400 children, from 12 to 15 years of age. With 0.05% NaF as the active control, rinsing was conducted daily for four mo after baseline examinations. Four-month examinations showed significantly lower Plaque Index scores for the SnF2 group. Gingival Index scores for the SnF2 group were lower, but the difference did not reach statistical significance.
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