The nurse hands him a chisel. He positions it on the edge of the jaw and places the flat tip between the tooth and the gum. He pushes down, straining so hard that his smile becomes a grimace. Presently he stands to improve his leverage. He uses both hands; he stands on tiptoe, bearing down with shaking arms. The tooth resists and resists, and when at last it gives way it does so too easily, so that the chisel spends its force upwards, hitting the teeth above.
