Table 1.

Distance between the apical limit of the obturation to the apical foramen (mm) and percentage of the cases with voids.

	Distance		Voids
Group	n	Mean (SD)	n	%
Thermafil	18	0.32 a (0.24)	2	10%a
Soft-Core	19	0.27 a (0.18)	1	5%a

Different superscript letters indicate statistically significant difference within column.