Read it through once

It appears that they had false teeth in those days. They were made of ivory sometimes, sometimes of bone, and were thrust into the natural sockets, and lashed to each other and to the neighbouring teeth with wires or with silk threads. They were not to eat with, nor to laugh with, because they dropped out when not in repose. You could smile with them, but you had to practise first, or you would overdo it. They were not for business, but just decoration. They filled the bill according to their lights.