Traditional dental fillings for early caries, mainly shallow caries and moderate caries without clinical symptoms of the affected teeth, fillings are not anesthetic, because the tooth itself does not produce pain, so the pain in the filling will not be particularly obvious. However, with the current medical concept, due to the application of dental high-speed turbine drilling in the process of filling, there may be stimulated to the dentin nerve, resulting in tooth filling process pain, so now the process of filling can also be applied to anesthesia, accordingly in the local injection of infiltration anesthesia, clinically better infiltration effect can be achieved, this time and then against the teeth for the repair of the tooth is no pain. For the therapeutic effect, whether applying anesthesia or not, dental fillings are no problem.