In a four-day, non-brushing model with supragingival irrigation suggests that chlorhexidine at a 0.12% concentration has superior anti-plaque and anti-gingivitis effects compared to 0.1% chlorhexidine and essential oils.
Background: The aim of this split-mouth study was to compare the antiplaque and antigingivitis efficacy of different chlorhexidine (Chx) formulations and essential oils (EO) over negative control (steril saline) during the first 4-day of plaque accumulation on cleaned tooth surfaces.
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This study showed that the essential oils possess both bacteriostatic and bactericidal activity against some of the Gram-negative and Gram-positive bacteria when tested in vitro and may be effective on other bacteria.