Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Breath odour
RCT	187 people	Mean organoleptic breath scores before brushing 4 weeks 2.15 with toothpaste containing zinc sulfate and fluoride 2.80 with placebo toothpaste containing fluoride	P = 0.0001	Effect size not calculated	zinc sulfate toothpaste
RCT	187 people	Mean organoleptic breath scores 2 hours after brushing 4 weeks 1.54 with toothpaste containing zinc sulfate and fluoride 2.85 with placebo toothpaste containing fluoride	P <0.0001	Effect size not calculated	zinc sulfate toothpaste