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Table 1 Total Plaque Index (Mean ± SD) for the Test and Control Groups (N = 30)

From: Efficacy of essential oil mouthwash with and without alcohol: a 3-Day plaque accumulation model

  EO with alcohol EO without alcohol p value*
Overall 2.18 ± 0.39 2.46 ± 0.42 < 0.001
All vestibular 2.51 ± 0.49 2.88 ± 0.58 < 0.001
All lingual 1.86 ± 0.45 1.86 ± 0.57 ns
Incisors 1.93 ± 0.48 2.27 ± 0.59 < 0.001
Canines 1.99 ± 0.46 2.47 ± 0.56 < 0.001
Premolars 2.13 ± 0.41 2.40 ± 0.48 0.003
Molars 2.64 ± 0.49 2.75 ± 0.37 ns
  1. *Using Wilcoxon signed-rank test.
  2. ns: no statistically significant difference between EO with alcohol and EO without alcohol was found.