Table 1

Instrument	N	Deformation		Fracture
Instrument	N	n	%	n	%
SM1	120	18	15^a	0	0^a
SM2	120	46	38.33^b	2	1.66^a
SM3	120	16	13.33^a	1	0.8^a

Different superscript letters indicate statistically significant difference within column.
N = number of TFA instruments used; n = number of deformations or fractures observed; SM = small/medium.