A Systematic Review of the Effect of Oral Rinsing with H₂O₂ on Clinical and Microbiological Parameters Related to Plaque, Gingivitis, and Microbes

Table 1

Risk of bias of the nonrandomized clinical trial, assessed by ROBINS-I tool, included in the present systematic review.

Author, year	Bias due to confounding	Bias in selection of participants into the study	Bias in classification of interventions	Bias due to deviations from intended interventions	Bias due to missing data	Bias in measurement of outcomes	Bias in selection of the reported result	Overall bias
Boyd, 1989 [15]	Critical	Low	Moderate	Low	Moderate	Moderate	Low	Moderate
Gusberti, 1988 [16]	Critical	Low	Moderate	Low	Low	Serious	Low	Critical
Pitten, 1999 [17]	Critical	Low	Moderate	Moderate	Low	Serious	Low	Critical
Wennström, 1979 [18]	Critical	Low	Moderate	Low	Low	Moderate	Low	Serious