The application of a hammer is a very traditional way of extracting teeth, mainly used for teeth that are relatively difficult to remove, especially for wisdom teeth that are buried and obstructed. When removing such teeth, the bone is often buried due to the poor position of the wisdom teeth, and the application of a hammer and chisel can remove the bone covering the wisdom teeth and can split the wisdom teeth for extraction, which is a very traditional way. With the development of technology, the application of hammers is now less and less. The current extraction method is to apply special surgical handpieces, that is, surgical turbine drills, to remove the bone and to cut it against the tooth, cut it into small pieces and then extract the tooth in pieces, hammers are still sometimes applied, that is, when extracting the more difficult to extract teeth, periodontal gaps are also applied to hammers and chisels.