Results on other tooth surfaces, such as facial, lingual, proximal, and gingival surfaces also demonstrated statistically greater (p < 0.05) reductions in mean plaque scores for the baking soda-containing dentifrices as compared to the baking soda-free dentifrices. Between-group comparisons of whole mouth plaque scores in all five studies demonstrated that brushing with baking soda dentifrices resulted in statistically greater (p < 0.01) reductions in whole mouth mean plaque scores than brushing with dentifrices that did not contain baking soda. In all studies, every dentifrice exhibited a significant (p < 0.0001) reduction in 24-hour plaque scores. In each study, wash-out periods with a regular dentifrice not evaluated in the study separated each product treatment. modification of the Quigley-Hein Plaque Index at six sites per tooth according to Soparkar's modification as described by Lobene, et al. Plaque was scored before and after supervised brushing for one minute using the Turesky, et al. After approximately 24 hours without oral hygiene, subjects with sufficient plaque were enrolled in the study phase. The objective of this study was to compare commercial dentifrices containing 20% to 65% baking soda and commercial dentifrices without baking soda in enhancing plaque removal efficacy of tooth brushing.įive randomized, controlled, blinded, crossover clinical studies were performed among healthy adult volunteers who provided informed consent. However, little has been done to confirm these results and to compare baking soda-containing dentifrices with more recently commercialized non-baking soda dentifrice formulations. An earlier clinical study demonstrated that brushing with a commercial Arm & Hammer dentifrice containing baking soda physically removed significantly more plaque than brushing with either of two commercial dentifrices which did not contain baking soda.
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