1. According to the Hawaii Dental Practice Act, which of the following procedures is a licensed dental hygienist NOT permitted to perform independently? A. Intra-oral infiltration local anesthesia B. Intra-oral block anesthesia C. Administration of nitrous oxide D. Removal of hard and soft deposits from teeth Correct Answer: C. Administration of nitrous oxide Explanation: In Hawaii, a licensed dental hygienist is allowed to administer intra-oral infiltration local anesthesia and intra-oral block anesthesia if they are certified by the Hawaii Dental Board and working under the direct supervision of a licensed dentist. However, they are not permitted to administer nitrous oxide independently. 2. Under Hawaii's dental laws, which type of anesthesia may a general dentist administer without a special permit? A. General anesthesia