Nitrous oxide when used in combination with sedative agent may produce minimal, moderate or deep sedation. During the administration of moderate or nitrous-oxide oxygen sedation, if a patient enters a deeper level of sedation than the dentist is authorized by permit to provide, then the dentist shall stop the sedation and dental procedures until the patient returns to the intended level of sedation.
Wis. Admin. Code Dentistry Examining Board DE 11.03