Dental Hygienist Requirements in Minnesota: Scope of Practice & Direct Access
Dental Hygienists in Minnesota are regulated by the Minnesota Board of Dentistry. The ADHA records a direct-access provision for Minnesota — Collaborative Practice (Sec. 150A. 10, Subd. 1a) — 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 2001/2017
Category
Collaborative Practice
Minnesota law
Statute
Sec. 150A. 10, Subd. 1a
ADHA Practice Act chart
Permitted functions
14 of 22
Verified September 2026
Regulated by
Minnesota Board of Dentistry
Minnesota’s Direct-Access Provision: Collaborative Practice
A Collaborative practice dental hygienist may be employed or retained by a health care facility, program, or nonprofit organization to perform the dental hygiene services without the patient first being examined by a licensed dentist.
Practice setting can be a hospital; nursing home; home health agency; group home serving the elderly, disabled, or juveniles; state-operated facility licensed by the commissioner of human services or the commissioner of corrections; and federal, state, or local public health facility, community clinic, tribal clinic, school authority, Head Start program, or nonprofit organization that serves individuals who are uninsured or who are Minnesota health care public program recipients.
Provider services: Complete prophylaxis to include scaling, root planing, and polishing of restorations; Preliminary charting of the oral cavity and surrounding structures to include case histories, perform initial and periodic examinations and assessments to determine periodontal status, and formulate a dental hygiene treatment plan in coordination with a dentist's treatment plan; Dietary analysis, salivary analysis, and preparation of smears for dental health purposes; Etch appropriate enamel surfaces, application and adjustment of pit and fissure sealants; Removal of excess bond material from orthodontic appliances; Replacement, cementation, and adjustment of intact temporary restorations extraorally or intraorally; Removal of marginal overhangs; Make referrals to dentists, physicians, and other practitioners in consultation with a dentist; Administer local anesthesia. Before administering local anesthesia, a dental hygienist must have successfully completed a didactic and clinical program sponsored by a dental or dental hygiene school accredited by the commission on dental accreditation, resulting in the dental hygienist becoming clinically competent in the administration of local anesthesia; Administer nitrous oxide inhalation analgesia; and Obtain informed consent, according for treatments authorized by the supervising dentist pursuant to the dental hygienist's scope of practice.
Requirements: Has entered into a collaborative agreement with a licensed dentist that designates authorization for the services provided by the dental hygienist and has documented completion of a course on medical emergencies within each continuing education cycle.
What a Dental Hygienist Can Do in Minnesota: Permitted Functions & Supervision Levels
Minnesota's ADHA Practice Act row centers on indirect supervision, where the dentist authorizes the procedure and must be in the office while it happens: oral prophylaxis, x-rays, study cast impressions, placing and removing periodontal dressings, and placing and removing sutures are all listed there.
Fluoride, pit and fissure sealants, scaling and root planing, and soft tissue curettage sit at general supervision, needing dentist authorization but not dentist presence.
Topical anesthesia and lasers carry two-level cells, general supervision in one setting and collaborative practice in another, so the level depends on where the hygienist works.
Local anesthesia is listed at direct supervision, requiring the dentist present, stricter than the general-supervision group.
Administering nitrous oxide, dental hygiene diagnosis, treatment planning, dental hygiene assessment, prescriptive authority, Botox, vaccines, and dermal fillers are not listed on the chart for Minnesota.
- Local anesthesia is listed at direct supervision (D) for Minnesota, requiring the dentist present, while most other listed functions sit at general or indirect supervision.
- Topical anesthesia and lasers carry two-level cells (G/CP), general supervision in one setting and collaborative practice in another, so the level depends on where the hygienist works.
- Seven functions — oral prophylaxis, x-rays, study cast impressions, placing and removing periodontal dressings, and placing and removing sutures — sit at indirect supervision, requiring the dentist to authorize and be in the office.
- Eight functions, including dental hygiene diagnosis, treatment planning, dental hygiene assessment, and prescriptive authority, are not listed on the Practice Act chart for Minnesota.
- ID
- Indirect supervision: dentist must authorize procedure and be in the dental office while the procedure is performed
- D
- Direct supervision: dentist needs to be present
- G
- General supervision: dentist needs to authorize prior to services, but need not be present
- CP
- Collaborative practice: RDH may practice without supervision, pursuant to a collaborative agreement between the RDH and a licensed dentist
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 Minnesota
Minnesota's ADHA Local Anesthesia chart lists 1995 as the year implemented, general supervision, and both block and infiltration injections.
Education must come from an accredited program.
The chart lists no separate exam and no course-requirement hours, with authorization coming through board rules.
Confirm current course and permit requirements with the Minnesota Board of Dentistry before enrolling or applying.
- State & Year Implemented
- 1995
- Supervision Required
- General
- Block and/or Infiltration
- Both
- Education Required
- Accredited
- Exam Required
- No
- Authorized by Statute or Rule
- Rules
- 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 Minnesota
ADHA's silver diamine fluoride document does not name SDF for Minnesota.
It cites §3100.8700 and quotes a provision stating a dental hygienist may apply topical medications, including fluoride and desensitizing agents, which ADHA places SDF under.
ADHA lists supervision as General, meaning a dentist authorizes the service in advance but does not need to be present.
The entry attaches no separate training course, setting, permit, or collaborative-agreement condition beyond that authorization.
Confirm current SDF-specific guidance with the Minnesota Board of Dentistry before relying on this provision alone.
Dental hygienist may apply topical medications, including fluoride and desensitizing agents.
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 Minnesota Board of Dentistry.
Frequently Asked Questions
Does a dentist have to supervise a dental hygienist in Minnesota?
It depends.
Under the 2001/2017 Collaborative Practice provision (Sec. 150A. 10, Subd. 1a), a collaborative practice dental hygienist can perform dental hygiene services without the patient first being examined by a licensed dentist — but only after entering into a collaborative agreement with a licensed dentist that authorizes the services, and only in specific settings such as hospitals, nursing homes, home health agencies, group homes, state-operated facilities, or public health and community clinics serving uninsured or public-program patients.
It is not an unconditional "no supervision needed." Confirm current details with the Minnesota Board of Dentistry.
Who regulates dental hygienists in Minnesota?
Dental Hygienists in Minnesota are regulated by the Minnesota 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 dental hygienist in Minnesota need a dentist in the room to give local anesthesia?
The ADHA Practice Act chart lists local anesthesia at direct supervision for Minnesota, meaning the dentist must be present while it is administered.
The separate ADHA Local Anesthesia chart lists general supervision instead for the same service, meaning the dentist authorizes it in advance but need not be present.
Treat both entries as the record and confirm current supervision requirements with the Minnesota Board of Dentistry.
Does the Minnesota chart let hygienists diagnose or write prescriptions?
Dental hygiene diagnosis, treatment planning, dental hygiene assessment, and prescriptive authority are all not listed on the ADHA Practice Act chart for Minnesota.
Not listed means ADHA did not find the function documented on the chart, which is a narrower statement than a ban.
Ask the Minnesota Board of Dentistry directly for a definitive answer on any of these four functions.
Is administering nitrous oxide listed for Minnesota hygienists?
Administering nitrous oxide is not listed on the ADHA Practice Act chart for Minnesota, the same status as Botox, vaccines, and dermal fillers.
Not listed means ADHA did not find the function documented on the chart, not that it is barred outright.
Confirm current rules on nitrous oxide administration with the Minnesota Board of Dentistry.
Does Minnesota's SDF entry name silver diamine fluoride directly?
No. ADHA's entry for Minnesota cites §3100.8700 and quotes a provision allowing a dental hygienist to apply topical medications, including fluoride and desensitizing agents — ADHA places SDF under that language rather than naming it.
The entry lists supervision as General, so a dentist authorizes the service in advance without needing to be present, and states no separate training, course, or setting requirement.
Confirm how the Minnesota Board of Dentistry currently treats SDF specifically before applying it.
What supervision level does ADHA list for the fluoride provision it places SDF under in Minnesota?
ADHA lists General supervision for the topical-medications provision it places SDF under in Minnesota: a dentist must authorize the application in advance but does not need to be in the office while it happens.
The quoted provision itself states no additional condition — no specific course, permit, or collaborative agreement — beyond the authorization to apply topical medications, including fluoride and desensitizing agents.
Ask the Minnesota Board of Dentistry whether any SDF-specific requirement applies before relying on General supervision alone.
More Minnesota & 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 Minnesota Board of Dentistry.