A polyherbal mouthwash containing hydroalcoholic extracts of Zingiber officinale, Rosmarinus officinalis and Calendula officinalis (5% v/w) was compared with chlorhexidine and placebo mouthwashes in subjects with gingivitis. Participants were instructed to use the mouthwash twice a day (after breakfast and dinner) for 30 seconds for a period of two weeks. The herbal mouthwash was shown to be effective in the treatment of gingivitis and its efficacy was comparable to that of chlorhexidine mouthwash.
Researchers have summarized and evaluated the evidence on the efficacy of turmeric as compared to chlorhexidine in the prevention and treatment of gingivitis. Five reviewed studies showed that both turmeric and chlorhexidine significantly decrease plaque index and gingival index, and can therefore be used in the prevention and treatment of gingivitis.