Table 2. Mann-Whitney U and Kruskal-Wallis tests results with descriptive statistics of C1-type’s median percentage values of gutta-percha, sealer and voids according to filling techniques, shaping system and level of sections.

		Gutta-Percha			Sealer			Voids
	n	Median	IQR	p	Median	IQR	p	Median	IQR	p
Filling Techniques
LC	40	86.40c	8.85	< .001	13.10c	8.94	< .001	0.16a	0.34	< .05
CW	40	97.30c	5.75		2.50c	5.89		0.00a	0.13
Shaping System
R	40	89.66	17.67	.25	10.96	17.70	.30	0.09	0.32	.36
H	40	94.06	12.05		5.54	12.12		0.02	0.21
Level of Sections
2mm	20	80.40c	23.88	< .001	19.26c	23.88	< .001	0.00b	0.00	< .01
4mm	20	91.13c	13.68		8.79c	13.40		0.00b	0.23
6mm	20	92.71c	11.43		6.93c	11.80		0.18b	0.30
8mm	20	97.06c	6.80		2.52c	6.79		0.12b	0.27
Total	20	91.27c	6.51		8.49c	6.46		0.15b	0.26

^a Statistically significant difference between groups at level of p < .05,

^b p < .01,

^c p < .001