650—23.4(153) Level 1 expanded function procedures for dental assistants. Level 1 expanded function procedures for dental assistants include:
	23.4(1) Taking occlusal registrations;
	23.4(2) Placement and removal of gingival retraction material;
	23.4(3) Fabrication, temporary cementation, and removal of provisional restorations;
	23.4(4) Applying cavity liners and bases; desensitizing agents; and bonding systems, to include the placement of orthodontic brackets, following the determination of location by the supervising dentist;
	23.4(5) Monitoring of patients receiving nitrous oxide inhalation analgesia, which may include increasing oxygen levels as needed, pursuant to the following:
	a. 	A dentist shall induce a patient and establish the maintenance level;
	b. 	A dental assistant may make adjustments that decrease the nitrous oxide concentration during the administration of nitrous oxide;
	c. 	A dental assistant may turn off the oxygen delivery at the completion of the dental procedure;
	23.4(6) Taking final impressions;
	23.4(7) Removal of adhesives using nonmotorized hand instrumentation;
	23.4(8) Placement of Class 1 temporary filling materials; and
	23.4(9) Recementation of provisional restorations.
[ARC 4676C, IAB 9/25/19, effective 10/30/19]