Table 1.

Descriptive data of the torque at failure and angular deflection in the tested systems

		Surface area at D3 (mm2)	Torque at failure (gcm)			Angular deflection (degree)
			Mean ± SD	Median	Range	Mean ± SD	Median	Range
PTU	S1	0.022	68.8 ± 25.1	77.6af	25.5–101.2	347.9 ± 37.6	355aeg	270–420
	S2	0.024	112.5 ± 30.5	108.6b	60.6–182.2	367 ± 48.5	365af	290–495
	F1	0.048	100.6 ± 36.4	93.9abg	63.3–169.8	380.3 ± 48.1	375bf	295–480
	F2	0.121	141.7 ± 37.6	136.3c	90.82–235.5	346.7 ± 56.6	350aeg	275–470
	F3	0.149	196.2 ± 20.9	189.8d	168.4–250.8	559 ± 62.4	540c	450–690
PTG	S1	0.022	43.4 ± 14.9	41.6e	22.2–80	361.7 ± 53.1	370abdef	280–440
	S2	0.024	73.7 ± 33.3	66.3f	37.4–179.0	331.0 ± 39.9	335e	260–385
	F1	0.048	94 ± 23.1	91.4b	37.8–129.4	393.2 ± 60.6	390f	285–495
	F2	0.121	117.4 ± 32	115.5bcg	70.6–201.2	371.3 ± 50.4	370fg	280–495
	F3	0.149	166.4 ± 17.2	167.4h	135.1–194.5	580.3 ± 61.7	580c	480–670
PTN	X1	0.048	59.9 ± 13.5	58.8f	36.7–82.2	291.6 ± 35.8	280h	220–360
	X2	.094	95.8 ± 38.9	92ab	44.3–185.1	303.1 ± 32.5	310h	245–355
	X3	0.137	115.4 ± 17.6	116.7i	81.4–142.9	303.7 ± 26.3	300h	270–355

Different superscripts indicate statistical significance