Table 1.

Mean, standard deviation, and error range of the experimental groups.

	n	Mean	Standard deviation	Minimum	Maximum
Root ZX	32	0.37a	0.25	0.00	0.85
Root ZX II	32	0.41a	0.34	0.00	1.15
Root ZX Mini	32	0.32a	0.28	0.00	0.85

Different superscript letters indicate the presence of a statistically significant difference among the experimental groups (P < .05).