Investigation of Coronal Leakage of Root Fillings after Smear Layer Removal with EDTA or Er,Cr:YSGG Laser through Capillary Flow Porometry

Table 2

Range and median of minimum, mean flow, and maximum pore diameters by root end filling material at 48 h (groups 1 to 5) and then immediately after root resection (groups 6 to 10).

Group	Minimum pore diameter (𝜇m)		Mean flow pore diameter (𝜇m)		Maximum pore diameter (𝜇m)
	Range	Median	Range	Median	Range	Median
1	0.069–0.183	0.0870	0.078–0.277	0.1080	0.152–0.483	0.3020
2	0.069–0.172	0.0820	0.075–0.237	0.1400	0.100–0.558	0.2510
3	0.069–0.238	0.0710	0.073–0.332	0.1220	0.126–0.414	0.2910
4	0.069–0.410	0.0980	0.079–0.449	0.1660	0.143–0.881	0.3340
5	0.069–0.112	0.0760	0.078–0.194	0.091	0.094–0.550	0.1830
6	0.069–0.209	0.0840	0.090–0.332	0.1180	0.162–0.976	0.3080
7	0.069–0.244	0.0870	0.074–0.266	0.1420	0.144–0.452	0.2840
8	0.069–0.171	0.0710	0.075–0.247	0.0850	0.170–0.486	0.2560
9	0.069–0.212	0.1020	0.074–0.520	0.1170	0.119–1.289	0.2640
10	0.069–0.148	0.0720	0.077–0.256	0.1120	0.158–0.641	0.2670

Groups: 1: irrigation with NaOCl 2.5% and EDTA 17% or standard protocol (SP), 2: SP + Er,Cr:YSGG lasing (dried root canal-RC), 3: NaOCl 2.5% + Er,Cr:YSGG lasing (dried RC), 4: SP + Er,Cr:YSGG lasing in EDTA (wet RC), and 5: NaOCl 2.5% + Er,Cr:YSGG lasing in NaOCl (wet RC). Groups 6 to 10 consist of the filled teeth of groups 1 to 5 with resected apices up to the most apical point of the preparation length and exposing the root canal filling.