Dental Hygienist Requirements in South Dakota: Scope of Practice & Direct Access
Dental Hygienists in South Dakota are regulated by the South Dakota State Board of Dentistry. The ADHA records a direct-access provision for South Dakota — 2011 provision (Rules 20:43:10) — the rule that decides whether a dental hygienist there can work without a dentist on site; see below for what it covers.
Verify before you rely on this
At a glance
ADHA Direct Access chart
Direct access
Yes
Since 2011
Category
2011 provision
South Dakota law
Statute
Rules 20:43:10
ADHA Practice Act chart
Permitted functions
17 of 22
Verified September 2026
Regulated by
South Dakota State Board of Dentistry
South Dakota’s Direct-Access Provision: 2011 provision
Dental hygienist may provide preventive and therapeutic services under collaborative supervision of a dentist in a school, nursing facility, Head Start program, non-profit mobile dental clinic, community health center or government program.
Provider services: Any services that can be provided under general supervision.
Requirements: Dental hygienist must possess a license to practice in the state and have 3 years of clinical practice in dental hygiene and a minimum of 4,000 practice hours. A minimum of 2,000 of those hours must have been completed within 2 of the 3 years preceding application. Dental hygienist must have a written collaborative agreement with a dentist and satisfactorily demonstrate knowledge of medical and dental emergencies and their management, infection control, pharmacology, disease transmission, management of early childhood caries and management of special needs population.
What a Dental Hygienist Can Do in South Dakota: Permitted Functions & Supervision Levels
South Dakota's ADHA Practice Act row puts most day-to-day hygiene functions at general supervision: oral prophylaxis, x-rays, local anesthesia, topical anesthesia, fluoride, pit/fissure sealants, scaling and root planing, soft tissue curettage, administering nitrous oxide, study cast impressions, and using lasers are all listed at general supervision (G), meaning a dentist authorizes the service in advance but need not be present.
Placing and removing periodontal dressings, placing and removing sutures, and dental hygiene assessment sit at indirect supervision (ID), where the dentist must authorize the procedure and be in the office while it is performed.
Treatment planning is listed at personal supervision (P), the chart's strictest level, requiring the dentist to authorize, be present, and check the patient before dismissal.
Dental hygiene diagnosis, prescriptive authority, Botox, vaccines, and dermal fillers are not listed on the chart for South Dakota.
- Eleven of the 22 functions, including oral prophylaxis, x-rays, local anesthesia and using lasers, are listed at general supervision (G) for South Dakota.
- Treatment planning is the only function listed at personal supervision (P), the chart's strictest level, requiring the dentist to authorize, be present, and check before patient dismissal.
- Placing and removing periodontal dressings, placing and removing sutures, and dental hygiene assessment are listed at indirect supervision (ID), where the dentist must authorize and be in the office while the procedure is performed.
- Dental hygiene diagnosis and prescriptive authority carry no supervision level for South Dakota on the chart, which ADHA records as not listed, a narrower statement than a ban.
- G
- General supervision: dentist needs to authorize prior to services, but need not be present
- ID
- Indirect supervision: dentist must authorize procedure and be in the dental office while the procedure is performed
- P
- Personal supervision: dentist needs to authorize, be present and check prior to patient dismissal
Read the chart the way ADHA means it
Source: ADHA Dental Hygiene Practice Act Overview: Permitted Functions and Supervision Levels by State (8.24.26 update). This document is intended for informational purposes only and does not constitute a legal opinion regarding dental practice in any state. To verify any information, please contact your state's dental board.
Local Anesthesia by Dental Hygienists in South Dakota
South Dakota authorized hygienists to administer local anesthesia in 1992 by statute.
The ADHA Local Anesthesia chart lists direct supervision, meaning the dentist must be present, for both block and infiltration injections.
Education is listed as accredited or Board-approved, with no separate exam and no course-hour requirement recorded.
Confirm current permit and course rules with the South Dakota State Board of Dentistry before enrolling or applying.
- State & Year Implemented
- 1992
- Supervision Required
- Direct
- Block and/or Infiltration
- Both
- Education Required
- Accredited/Board Approved
- Exam Required
- No
- Authorized by Statute or Rule
- Statute
- Legal Requirements for Local Anesthesia Courses
- No
Source: ADHA Local Anesthesia Administration by Dental Hygienists – State Chart (Revised December 2025). This document is intended for informational purposes only and does not constitute a legal opinion regarding dental practice in any state. To verify any information, please contact your state's dental board.
Silver Diamine Fluoride by Dental Hygienists in South Dakota
ADHA's silver diamine fluoride entry names SDF directly for South Dakota, citing §36-6A-40 and a Board Advisory Opinion dated October 20, 2017.
ADHA lists supervision as Direct or General.
The quoted opinion states it is within a dentist's scope of practice to use SDF to treat dental caries and to delegate its application to a dental hygienist, but it attaches a specific exception: applying SDF is not a delegable procedure to a hygienist under collaborative supervision.
So a dentist may delegate SDF application under direct or general supervision, but not under South Dakota's separate collaborative-supervision arrangement.
Through an advisory opinion, the Board stated it is within the scope of practice of a dentist to use silver diamine fluoride to treat dental caries, and to delegate its application to a dental hygienist. However, the application of SDF is not a delegable procedure to a dental hygienist under collaborative supervision.
Source: ADHA State Specific Information on Silver Diamine Fluoride (Revised September 2025). This document is intended for informational purposes only and does not constitute a legal opinion regarding dental practice in any state. To verify any information, please contact your state's dental board.
What Direct Access Does — and Doesn’t — Cover
Direct access is one dimension of scope, not scope itself. The ADHA’s direct-access chart records whether a dental hygienist can initiate treatment and treat a patient without a dentist present — the function-by-function supervision levels and the local anesthesia rules above come from two separate ADHA charts, and the three do not always line up neatly.
Don’t generalize from a direct-access provision to any other part of scope, and confirm specifics with the South Dakota State Board of Dentistry.
Frequently Asked Questions
Does a dentist have to supervise a dental hygienist in South Dakota?
It depends on the setting and the hygienist's eligibility.
Under the 2011 collaborative-supervision provision (Rules 20:43:10), a dentist doesn't need to be physically present, but the hygienist must hold a written collaborative agreement with a dentist and can only provide services in a school, nursing facility, Head Start program, non-profit mobile dental clinic, community health center, or government program.
To qualify, the hygienist needs a South Dakota license, 3 years of clinical practice, and a minimum of 4,000 practice hours (with at least 2,000 of those within the preceding 2 of 3 years), plus demonstrated knowledge of medical and dental emergencies, infection control, pharmacology, disease transmission, early childhood caries management, and special needs population management.
Outside that arrangement, this provision does not apply and is not a blanket unsupervised-practice grant.
Confirm current details with the South Dakota State Board of Dentistry.
Who regulates dental hygienists in South Dakota?
Dental Hygienists in South Dakota are regulated by the South Dakota State Board of Dentistry.
Scope of practice is set by state law and changes over time, so verify current rules directly with the board before relying on them.
Does a dentist have to be present when a South Dakota hygienist gives local anesthesia?
The two ADHA charts differ here.
The Practice Act row lists local anesthesia at general supervision (G) for South Dakota, meaning a dentist authorizes it in advance but need not be present.
The dedicated Local Anesthesia chart lists direct supervision, meaning the dentist must be present, for both block and infiltration injections since 1992.
Because the charts disagree, treat direct supervision as the safer standard and confirm the current requirement with the South Dakota State Board of Dentistry before providing local anesthesia.
Which South Dakota hygiene functions require the dentist to be in the office?
The ADHA chart lists no function at direct supervision for South Dakota, but five carry stricter-than-general levels.
Placing and removing periodontal dressings, placing and removing sutures, and dental hygiene assessment are listed at indirect supervision, where the dentist must authorize the procedure and be in the dental office while it is performed.
Treatment planning sits at personal supervision, the chart's strictest level, which also requires the dentist to check the patient before dismissal.
The chart does not say whether any of these carry ADHA's numbered footnotes, so confirm specifics with the South Dakota State Board of Dentistry.
Does the South Dakota chart list dental hygiene diagnosis or prescriptive authority?
No. Dental hygiene diagnosis and prescriptive authority are both marked not listed on the ADHA Practice Act chart for South Dakota, which means the chart records no supervision level for either function rather than stating that either one is banned.
Administering nitrous oxide, by contrast, is listed at general supervision, meaning a dentist authorizes it in advance but need not be present.
For what South Dakota law actually permits around diagnosis and prescriptive authority, ask the South Dakota State Board of Dentistry directly.
Does South Dakota's chart cover Botox, vaccines, or dermal fillers for hygienists?
No. Botox, vaccines, and dermal fillers are all marked not listed on the ADHA Practice Act chart for South Dakota, alongside dental hygiene diagnosis and prescriptive authority.
Not listed means the chart records no supervision level for that function — it is a gap in the chart, not a statement that the function is banned.
Whether South Dakota law allows a hygienist to perform any of these is a separate question from what this chart shows, so check directly with the South Dakota State Board of Dentistry.
Can a South Dakota dental hygienist apply silver diamine fluoride under a collaborative supervision agreement?
No. The South Dakota State Board of Dentistry's October 20, 2017 advisory opinion states that while a dentist may delegate SDF application to a dental hygienist, applying SDF is not a delegable procedure under collaborative supervision.
A hygienist practicing under South Dakota's collaborative-supervision provision (§36-6A-40) cannot apply SDF on that basis, even though the dentist may delegate other services within that arrangement.
Confirm current guidance with the South Dakota State Board of Dentistry before applying SDF in a collaborative-supervision setting.
Under what supervision can a South Dakota dentist delegate silver diamine fluoride to a hygienist?
ADHA lists South Dakota's supervision for silver diamine fluoride as Direct or General, and the Board's October 20, 2017 advisory opinion confirms a dentist may delegate SDF application to a dental hygienist to treat dental caries.
That delegation is distinct from South Dakota's collaborative-supervision arrangement, under which the same opinion says SDF application is not a delegable procedure.
Ask the South Dakota State Board of Dentistry which supervision level applies before relying on this in a specific practice setting.
More South Dakota & Dental Hygienist Resources
Sourced from the ADHA Direct Access States chart (Revised February 2025), the ADHA Dental Hygiene Practice Act Overview: Permitted Functions and Supervision Levels by State (8.24.26 update) and the ADHA Local Anesthesia Administration by Dental Hygienists – State Chart (Revised December 2025), and the ADHA State Specific Information on Silver Diamine Fluoride (Revised September 2025). Verified September 2026. This page is general information, not legal advice — confirm current rules with the South Dakota State Board of Dentistry.