Feat: Breaking a human finger.
Teeth has the area of 3.44443 sq cm.
Finger has the average thickness of 1.8 cm.
1.8*(129/54) = 4.3 cm (index phalanges length)
1.8/2 = 0.9 cm (radius of the index finger)
Volume: pi*0.9^2*4.3 = 10.9421672125 cc
Frag of a human bone is 51.6 j/cc
564.615828165 Joules, Street level (9-C)
V. Frag of a human bone is 67.5 j/cc
738.596286844 Joules, Street level (9-C)
Pulverization of a human bone is 170 j/cc
1,860.16842612 Joules, Street level (9-C)
This is when you broke one bone from a finger.
Credits to the Original Blog: https://vsbattles.fandom.com/wiki/User_blog:R4ndomPlayer315/Energy_required_to_just_break_a_finger