Table 3. Multiple pairwise comparisons of mechanical properties on loading and unloading between the study groups.

Tukey’s post hoc tests; *denotes statistical significance.

Parameter	Reference group	Comparison group	Loading		Unloading
			Mean difference	P-value	Mean difference	P-value
Yield strength (MPa)	Charcoal mouthwash	Probiotic mouthwash	305.36	0.000*	173.77	0.000*
		Chlorhexidine mouthwash	302.91	0.000*	172.32	0.000*
		Artificial saliva	56.19	0.000*	33.28	.000*
	Probiotic mouthwash	Chlorhexidine mouthwash	2.45	0.994	1.44	0.994
		Artificial saliva	361.56	0.000*	207.05	0.000*
	Chlorhexidine mouthwash	Artificial saliva	359.10	0.000*	205.60	0.000*
Flexural modulus of elasticity (GPa)	Charcoal mouthwash	Probiotic mouthwash	4.54	0.021*	3.66	0.046*
		Chlorhexidine mouthwash	4.28	0.012*	4.16	0.018*
		Artificial saliva	4.23	0.020*	4.04	0.023*
	Probiotic mouthwash	Chlorhexidine mouthwash	0.26	0.998	0.49	0.984
		Artificial saliva	8.78	0.000*	7.70	0.000*
	Chlorhexidine mouthwash	Artificial saliva	8.51	0.000*	8.20	0.000*
Spring back ratio	Charcoal mouthwash	Probiotic mouthwash	0.0005	0.034*	0.0003	0.083
		Chlorhexidine mouthwash	0.0004	0.089	0.0003	0.173
		Artificial saliva	0.0003	0.152	0.0003	0.075
	Probiotic mouthwash	Chlorhexidine mouthwash	0.00007	0.978	0.0000533	0.985
		Artificial saliva	0.00012	0.914	0.0000067	1.000
	Chlorhexidine mouthwash	Artificial saliva	0.00004	0.994	0.0000600	0.978