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The results demonstrate that use of the stabilized 0.454% stannous fluoride/sodium hexametaphosphate dentifrice over a 6-month period provided statistically significant reductions in gingivitis, gingival bleeding, and plaque when compared with a negative control dentifrice.

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Within the limits of the study protocol, the results demonstrated superior therapeutic benefits for the stabilized 0.454% stannous fluoride/sodium hexametaphosphate dentifrice in reducing gingivitis compared to the triclosan/copolymer control in this partially supervised study.

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Varying examiner styles impact the structure of resulting data. Importantly, the implementation of arbitrary thresholds (e.g., 20%) regarding percent treatment differences between groups as a guideline for judging the clinical significance is scientifically unsupported. A more scientific criterion in the field of gingivitis clinical testing would be the independent demonstration of statistical superiority compared to a negative control and/or a demonstration of similar or superior efficacy to clinically proven positive controls. In addition, interexaminer calibration is a mechanism that can be utilized to minimize the impact of different examiner styles in clinical settings involving more than one examiner.

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