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. 2021 Feb 4;18(4):1468. doi: 10.3390/ijerph18041468

Figure 2.

Figure 2

Gingival Index, the mean values of Gingival Index (changes) in relation to the number of patients of each study at each time-point: blue color correspond to ORHs and black corresponds to SAHs toothbrushes [41,42,43,44,45,46,47,48,49,50,51,52].