LC/Profile LC/Reciproc® GM/ProFile® GM/Reciproc®
Straight canal Curved canal Straight canal Curved canal Straight canal Curved canal Straight canal Curved canal
C 32.78 (14.88)Aa 5.33 (6.81)Ba 22.43 (14.45)CDa 17.85 (13.66)CEa 27.31 (17.18)ADa 11.92 (13.52)BEa 25.02 (19.81)ACa 11.59 (12.42)BEa
M 17.81 (16.63)Ab 9.06 (10.95)Aa 20.61 (23.33)Aa 20.80 (15.38)Aa 21.49 (25.9)Aa 22.15 (32.65)Aa 15.94 (22.83)Aa 16.11 (15.8)Aa
A 16.6 (21.15)Ab 21.35 (19.12)Ab 15.70 (14.75)Aa 18.58 (14.96)Aa 36.09 (30.36)Ba 12.92 (16.65)Aa 14.58 (15.78)Aa 11.50 (11.09)Aa
Total 22.4 (18.96)AC 11.91 (6.26)BD 17.34 (17.91)AD 19.07 (0.9)AE 28.3 (25.39)C 15.66 (10.26)ADE 18.52 (19.91)AF 13.07 (2.43)BDEF

LC = Lateral Condensation; GM = GuttaMaster®; C = Coronal third; M = Median third; A = apical third.
Different letters indicate statistically significant differences within the vertical columns (upper case) or within horizontal rows (lower case).
The Kruskal-Wallis non-parametric test was used to analyse the remnants of filling materials, followed by the least significant difference (LSD) post-hoc test.
P < 0.05 was considered statistically significant.
The “Total” row was excluded from the vertical statistical comparison.