Effects of Active Oxygen Toothpaste in Supragingival Biofilm Reduction: A Randomized Controlled Clinical Trial

Table 2

Comparison between groups according to the plaque index at buccal and lingual aspects.

Plaque index (PI)
Groups	Time
	W −1 (mean ± SD)	W0 (mean ± SD)	W1 (mean ± SD)	W12 (mean ± SD)	W18 (mean ± SD)
CT	3.37 ± 0.55	4.09 ± 0.55	3.00 ± 0.48	3.16 ± 0.46	3.11 ± 0.51
BM	3.45 ± 0.63	4.16 ± 0.48	3.11 ± 0.63	3.12 ± 0.71	2.94 ± 0.44

W −1: preclinical trial; W0: established gingivitis; W1: 1^st evaluation after brushing for 1 week; W12: evaluation of brushing for 12 weeks; W18: evaluation of brushing for 18 weeks. For each group, indicates significant difference between the times based on Tukey’s test.