Evaluation of design, mechanical properties, and torque/force generation of heat-treated NiTi glide path instruments

Table 3 Maximum clockwise torques, and maximum screw-in forces generated during glide path preparation. Mean (standard deviation)

	Maximum clockwise torque (Ncm)		Maximum screw-in force (gf)
Shaping region	Apical 2–4 mm	Apical 0–2 mm	Apical 2–4 mm	Apical 0–2 mm
TruNatomy Glider	0.209 (0.055)^a,b	0.549 (0.115)^a*	108.17 (21.249)^a	154.21 (18.371)^a†
V Taper 2H	0.181 (0.072)^b	0.284 (0.093)^b*	102.68 (20.153)^a	128.14 (20.965)^b†
HyFlex EDM	0.254 (0.057)^a	0.465 (0.078)^a*	81.765 (18.762)^b	121.5 (17.959)^b†

The different superscript letters within each column indicate significant differences among the brands of NiTi instrument (p < 0.05)
^* The maximum clockwise torque generated during apical 2 mm was higher than that during apical 2–4 mm (p < 0.05)
^† The maximum screw-in force generated during apical 2 mm was higher than that during apical 2–4 mm (p < 0.05)

ISSN: 1472-6831