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 following review of the fit and function by the supervising dentist, and temporary recementation of provisional restorations;
	23.4(4) Applying cavity liners and bases and desensitizing agents;
	23.4(5) Applying bonding systems, which may include the placement of the attachments used in clear aligner systems, following review of the fit and function by the supervising dentist;
	23.4(6) Placement, bonding, and removal of provisional orthodontic restorations as follows:
	a. 	Placement or bonding of orthodontic brackets and bands or provisional orthodontic appliances following review of the fit and function by the supervising dentist; and
	b. 	Removal of adhesive, orthodontic brackets and bands, or provisional orthodontic appliances using nonmotorized hand instrumentation;
	23.4(7) 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(8) Taking final impressions;
	23.4(9) Removal of adhesives using nonmotorized hand instrumentation;
	23.4(10) Placement of temporary restorative materials following preparation of the tooth by a dentist;
	23.4(11) Extraoral adjustment to acrylic dentures without making any adjustments to the prosthetic teeth; and
	23.4(12) Tissue conditioning (soft reline only).
[ARC 4676C, IAB 9/25/19, effective 10/30/19; ARC 6733C, IAB 12/14/22, effective 1/18/23]