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. 2022 Dec 10;8:33. doi: 10.1038/s41405-022-00126-4

Fig. 1. Flow diagram showing the stepwise methodology.

Fig. 1

The 15 participants who completed the study, received the two interventions in a crossover design as phase I and II, each phase started with a 1-week washout period and was followed by 2-weeks of study toothpaste use.