Alcohol-free essential oils containing mouthrinse efficacy on three-day supragingival plaque regrowth: a randomized crossover clinical trial

Table 4 Questionnaire responses (mean and SD) determined by VAS, n = 21

							Post-hoc analysis (p value^a)
Questionnaire questions	Answers from (0) to (10)	CHX	EO+	LZ	Saline	p value^b Total difference	CHX vs. EO+	EO+ vs. LZ	LZ vs. Saline	CHX vs. LZ
1) How was the taste of the product?	Very bad Very good	4.95 ± 3.52	5.65 ± 2.70	7.5 ± 1.43	3.60 ± 2.48	0.0012	n.s	0.0116	0.0002	0.0069
2) How long did the taste remain in the mouth after rinsing?	Very long Very short	3.20 ± 3.19	4.95 ± 2.65	5.10 ± 2.25	6.70 ± 2.94	0.0114	n.s	n.s	n.s	0.0413
3) How was your taste of food and drink affected?	Negative change Positive change	3.80 ± 2.40	4.70 ± 1.90	5.20 ± 1.96	4.50 ± 1.36	n.s.	n.s.	n.s.	n.s.	n.s.
4) Was the use of the mouth rinse convenient?	Not convenient Very convenient	6.75 ± 2.84	6.20 ± 2.28	6.75 ± 2.29	3.20 ± 3.43	0.0016	n.s	n.s	0.0003	n.s
5) What is your opinion about the rinsing time?	Very long Very short	5.15 ± 1.46	2.90 ± 2.83	4.80 ± 1.91	4.95 ± 2.14	n.s.	n.s.	n.s.	n.s.	n.s.
6) What was your perception of the plaque reduction?	Insufficient Very efficient	6.25 ± 2.67	6.30 ± 2.20	6.75 ± 1.74	3.20 ± 3.47	0.0030	n.s.	n.s.	0.0011	n.s.

^aUsing Wilcoxon signed-rank test with Bonferroni adjustment for multiple comparison, p < 0.0125
^bUsing Friedman test, p < 0.05
n.s. no statistically significant difference between each treatment, p > 0.0125

ISSN: 1745-6215