Meta-analysis of the Effect of an Essential Oil-containing Mouthrinse on Gingivitis and Plaque1 footnotes
†In only 2 studies, daily flossing was required in a mechanical regimen. In all others, use of an interdental cleaning device was allowed to continue if it had been part of the subject’s usual oral care regimen.
‡Odds ratios measure how strongly an “event,” or variable, is associated with an “outcome.” An odds ratio =1 indicates exposure to a variable and does not affect the odds of an outcome. An odds ratio >1 indicates exposure is associated with higher odds of an outcome occurring. An odds ratio <1 indicates exposure is associated with lower odds of an outcome occurring. In the meta-analysis, the event, or variable, was the addition of EO mouthrinse to a mechanical routine twice a day for 6 months. The outcome was the achievement of “healthy” gingival sites or “plaque-free” sites. In this meta-analysis, the higher the odds ratio, the more likely a subject using EO mouthrinse was to have “healthy” and/or “plaque-free” sites, compared with mechanical methods alone.
Reference: 1. Araujo M, Charles C, Weinstein R, Parikh-Das AM, Zhang J, Gunsolley JC. Meta-analysis of the effect of an essential oil-containing mouthrinse on gingivitis and plaque. J Am Dent Assoc. 2015;146(8):610-622 and/or post hoc analyses of data.