Experimental Investigations on Microcracks in Vibrational and Conventional Drilling of Cortical Bone

Table 2

The percentages of microcracks area in the SEM picture from each group.

	×100	×300	×500
Conventional drilling	43.09%	32.34%	16.85%
Vibrational drilling; (𝐴=500 μm, 𝑓=20 Hz)	22.69%	14.66%	6.67%