Dentists and lawyers in the United States have a certain influence on their careers, and they study for a longer time than other disciplines. On the one hand, it shows their specialty, on the other hand, it also shows their respect for life. Teeth are very important to a person, because people can't leave things behind in one breath, but they also need to fight for and safeguard their rights and interests when they are alive. So we can see the role of dentists and lawyers. In China, the functions of the two can't be fully demonstrated as they are now.