Adults fill the cavity if it is shallow or medium caries, the cavity is shallow, do not need to play anesthetic, if it is deep caries, the cavity is deeper, you need to play anesthetic analgesia, specific as follows.
1. shallow caries or caries: clinically diagnosed as shallow caries and caries in the cavity, the hole depth is limited to the enamel and dentin in the shallow layer, and there is a certain thickness of dental tissue exists between the pulp, fillings will not produce severe pain, and do not need to play anesthesia.
2 deep caries: the hole depth reaches the deep layer of dentin, the bottom of the hole is close to the pulp, fillings may produce pain, need to play anesthetic to prevent pain during the operation.
If the cavity is very deep, the pulp has been exposed to infection, the symptoms of pulpitis, the filling before the need for anesthetic analgesia.