Expanded Functions


Pursuant to IAC 650--Chapter 23, dentists may delegate expanded function duties to licensed dental hygienists and registered dental assistants if the practitioner has completed board-approved training in the specific expanded function that will be delegated. Certain restrictions and limitations apply. Please refer to IAC 650--Chapter 23 for specific requirements. 

Pursuant to IAC 650--23.7(4), dental hygienists and dental assistants who completed board-approved expanded functions training prior to January 1, 2020, can continue to perform the expanded functions for which training was previously completed.  Documentation of board-approved training shall be maintained in each facility where these services are performed.  Documentation shall be provided upon request.

IAC 650--Chapter 23 effective 10/30/2019.

Level 1 Expanded Functions

Basic Level 1. Dental hygienists or dental assistants who train in some, but not all, Level 1 expanded function procedures are deemed to be basic expanded function dental hygienists or dental assistants. A dentist may delegate to dental hygienists or dental assistants only those Level 1 expanded function procedures for which training has been successfully completed.

Certified Level 1. Expanded function dental hygienists or dental assistants who have successfully completed training for all Level 1 expanded function procedures and have been issued a certificate of completion by a board-approved training program are deemed to be certified Level 1 dental hygienists or dental assistants.

Level 1 Expanded Functions

  1. Taking occlusal registrations.
  2. Placement and removal of gingival retraction material.
  3. Fabrication, temporary cementation, and removal of provisional restorations.
  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.
  5. Monitoring of patients receiving nitrous oxide inhalation analgesia, which may include increasing oxygen levels as needed, pursuant to the following:*
    1. A dentist shall induce a patient and establish the maintenance level;
    2. A dental assistant may make adjustments that decrease the nitrous oxide concentration during the administration of nitrous oxide;
    3. A dental assistant may turn off the oxygen delivery at the completion of the dental procedure.
  6. Taking final impressions.
  7. Removal of adhesives using nonmotorized hand instrumentation.*
  8. Placement of Class 1 temporary filling materials.
  9. Recementation of provisional restorations

*Expanded functions for dental assistants.

Level 2 Expanded Functions

Certified Level 2. Registered dental assistants and licensed dental hygienists who complete training in all Level 1 and Level 2 expanded functions are Certified Level 2 expanded functions providers.  A dentist may delegate any of the Level 1 or Level 2 expanded function procedures to a registered dental assistant or licensed dental hygienists who is a certified Level 2 provider.  

Please note: Before beginning Level 2 training, expanded function dental hygienists or dental assistants must have a minimum of one year of clinical practice as a certified Level 1 dental hygienist or dental assistant and pass an entrance examination administered by the Level 2 training program.  

Level 2 Expanded Functions

  1. Placement and shaping of amalgam following preparation of a tooth by a dentist.
  2. Placement and shaping of adhesive restorative materials following preparation of a tooth by a dentist.
  3. Polishing of adhesive restorative material using a slow-speed handpiece.
  4. Fitting of stainless steel crowns on primary posterior teeth, and cementation after fit verification by the dentist.
  5. Tissue conditioning (soft reline only).
  6. Extraoral adjustment to acrylic dentures without making any adjustments to the prosthetic teeth.
  7. Placement of intracoronal temporary fillings following preparation of a tooth by a dentist

Expanded Functions Training Approval

Pursuant to IAC 650--Chapter 23, expanded function training shall be eligible if the training has been prior-approved by the Board.  If you wish to submit an expanded functions training course for approval, you may find an expanded functions training approval request form here.

Training Requirements

1.   An initial assessment to determine the base entry level of all participants in the program.
2.   A didactic component in accordance with IAC 650--23.7(3);
3.   A laboratory component, if necessary, in accordance with IAC 650--23.7(3);
4.   A clinical component, which may be obtained under the personal supervision of the participant’s supervising dentist while the participant is concurrently enrolled in the training program in accordance with IAC 650--23.7(3); and
5.   A post-course competency assessment at the conclusion of the training program.

Certificate of Completion

Upon the successful conclusion of Board-approved training, training programs are required to issue a certificate of completion for the expanded function(s) in which training was completed.  The certificate shall be prominently displayed at the facility where the services will be provided.

Expanded Functions Training Providers

The following providers have been approved to provide training in all Level 1 expanded functions.  Approved expanded functions training courses are available to both dental assistants and dental hygienists who wish to train in expanded functions.

Approved Level 1 Expanded Functions Training Providers

David Davidson, D.D.S.
8573 Urbandale Ave
Urbandale, IA  50322
Phone:  515-279-3848

Dentistry on Fifth
505 5th Ave. #939
Des Moines, IA 50309
Phone:  515-707-4848

Impact Dental Training
5965 Merle Hay Road, Suite D
PO Box 434
Johnston, IA 50131
Phone: 515-321-5942

Muscatine Assist to Succeed
Contact: Carol Moreno, D.D.S.
2002 Houser St.
Muscatine, IA 52761
Phone: 563-288-2612

​Tesene Dental Education, L.L.C.
Contact: Joseph Tesene, D.D.S.

Community College Program List

Des Moines Area Community College
Lori Brown, RDH, MSEd, CDA; Dental Programs Chairperson
2006 S Ankeny Blvd
Ankeny, IA 50021 
Phone: 515-964-6312; Fax: 515-964-6602
Email: lmbrown@dmacc.edu

Hawkeye Community College
Emily Boge, RDH, MPA, CDA; Program Director
1501 East Orange Road
Box 8015
Waterloo, IA 50704
Phone: 319-296-4302; Fax: 319-296-1674
Email: emily.boge@hawkeyecollege.edu

Indian Hills Community College
Carol Sexton-White, RDH, CDA; Program Director
525 Grandview Avenue
Ottumwa, IA 52501 
Phone: 641-683-5298; Fax: 641-683-5254
Email: Carol.Sexton-white@indianhills.edu

Iowa Valley Community College
3700 South Center Street
Marshalltown, IA 50158
Phone: 641-844-5794; Fax: 641-752-8149

Iowa Western Community College
Sarah Stream, RDA, CDA; Program Director
2700 College Road
Box 4-C
Council Bluffs, IA 51502
Phone: 712-325-3351
Toll-free: 800-432-5852, X-3469
Fax: 712-325-3736
Email: sstream@iwcc.edu

Or Continuing Education
Email: ce@iwcc.edu
Phone: 712-325-3265
Fax: 712-325-3729

Kirkwood Community College
​Kristee Malmberg, RDA, BS, CDA; Program Director
6301 Kirkwood Boulevard SW 
Cedar Rapids, IA 52404
Phone: 319-398-5560; Fax: 319-398-1293
Email: Kristee.Malmberg@Kirkwood.edu

Northeast Iowa Community College
Dawn Klostermann, RDA, BA, CDA; Program Director
Peosta Campus
8342 NICC Drive
Peosta, IA 52068
Phone: 563-556-5110 ext. 227
Fax: 563-556-5058 
Email: klostermannd@nicc.cc.ia.us

Scott Community College
Barb Nichol, RDA, MA, CDA; Program Director
500 Belmont Road
Bettendorf, IA 52722
Phone: 563-441-4259; Fax: 563-441-4204
Email: bnichol@eicc.edu

Western Iowa Tech Community College
Joni Miller, RDA, BS, CDA; Program Director
4647 Stone Avenue
Box 5199
Sioux City, IA 51102
Phone: 800-352-4649 ext. 3240
Fax: 712-274-6448
Email: joni.miller@witcc.edu

*Updated 10/30/2019

Printed from the website on May 31, 2020 at 8:20pm.