# Montana HB 321: Generally revise laws related to the supervised practice of dental hygienists

Montana HB 321, Generally revise laws related to the supervised practice of dental hygienists, is a 69th Legislature, Regular Session (2025) House bill sponsored by Nelly Nicol (Republican); status signed, last action 2025-04-03 (Chapter Number Assigned) (as of 2026-10-19).

- Canonical: https://policyrisk.com/state-bill/MT-HB321-2025
- As of: 2026-10-19
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Montana HB 321
- State: Montana
- Session: 69th Legislature, Regular Session (2025)
- Title: Generally revise laws related to the supervised practice of dental hygienists
- Status: signed
- Chamber: House
- Introduced: 2025-01-27
- Last action: 2025-04-03, Chapter Number Assigned
- Sponsor: Nelly Nicol (Republican)
- Cosponsors: 1
- Subjects: Health Care Services, Health, Professions and Occupations Generally, Professions and Occupations A-D, Rule Making
- Touches household money: no
- Roll calls: 4 (296 yes, 2 no in all)
- Economic provisions PRIA read: 2

## Summary

No summary available.

## Bill overview: provisions PRIA read

- More preventive dental care at schools and clinics: benefit, low. Licensed dental hygienists can give preventive care in public health clinics and school programs without a dentist present. Allowed services include removing deposits and stains, topical fluoride, sealants, and polishing restorations. They may also do root planing, oral cancer screening, X-rays, an…
- Rules and limits for hygienists in public programs: mixed, low. Hygienists must hold a limited access permit to work under public health supervision. Care under that permit is only for patients in qualifying facilities or eligible students. They must be elderly, infirm, disabled, or unable to afford regular dental care. Hygienists must refer needs outside their…

## Sponsors and cosponsors

- Sponsor: Nelly Nicol (Republican), House
- Cosponsor: Bruce "Butch" Gillespie (Republican), Senate

## Roll call votes

| Date | Chamber | Motion | Result | Yes | No | Other |
| --- | --- | --- | --- | --- | --- | --- |
| 2025-03-18 | Senate | Do Concur | pass | 49 | 0 |   |
| 2025-03-17 | Senate | Do Concur | pass | 50 | 0 |   |
| 2025-02-06 | House | Do Pass | pass | 98 | 1 |   |
| 2025-02-05 | House | Do Pass | pass | 99 | 1 |   |

## Actions (24)

- 2025-04-03: Chapter Number Assigned (House)
- 2025-04-03: Signed by Governor (House)
- 2025-03-25: Transmitted to Governor (House)
- 2025-03-24: Signed by President (Senate)
- 2025-03-21: Signed by Speaker (House)
- 2025-03-19: Returned from Enrolling (House)
- 2025-03-18: Sent to Enrolling (House)
- 2025-03-18: 3rd Reading (Senate)
- 2025-03-17: 2nd Reading (Senate)
- 2025-02-24: Committee Report (Senate)
- 2025-02-24: Committee Executive Action (Senate)
- 2025-02-15: Hearing (Senate)
- 2025-02-14: Referred to Committee (Senate)
- 2025-02-07: 1st Reading (Senate)
- 2025-02-06: Transmitted to Senate (House)
- 2025-02-06: 3rd Reading (House)
- 2025-02-05: 2nd Reading (House)
- 2025-01-31: Committee Report (House)
- 2025-01-31: Committee Executive Action (House)
- 2025-01-31: Committee Executive Action (House)
- 2025-01-28: Hearing (House)
- 2025-01-28: 1st Reading (House)
- 2025-01-28: Referred to Committee (House)
- 2025-01-27: Introduced (House)

## Bill text

- As Amended (Version 2), 2025-03-19: [PDF](https://docs.legmt.gov/download-ticket?ticketId=1bf10a46-684b-4534-a6db-4e83a127a4b5)
- Enrolled, 2025-03-19: [PDF](https://docs.legmt.gov/download-ticket?ticketId=6a341bdf-a7e3-4afa-9e3a-83d5477f36b9)
- Introduced, 2025-01-27: [PDF](https://docs.legmt.gov/download-ticket?ticketId=bec9589c-d424-4598-bd34-fcfd26b1554b)

## Related bills

- SB 437: Revise definition of sex in Montana law (signed)
- HB 831: Increase elderly homeowner and renter income tax credit (vetoed)
- HB 628: Revise early literacy targeted intervention laws (vetoed)
- SB 410: Provide for Montana genomic security act (vetoed)
- SB 424: Revising the disabled veteran property tax assistance program (vetoed)
- SB 422: Generally revise laws relating to insurance coverage relating to cancer (vetoed)

## Sources
- [As Amended (Version 2) (PDF)](https://docs.legmt.gov/download-ticket?ticketId=1bf10a46-684b-4534-a6db-4e83a127a4b5)
- [Enrolled (PDF)](https://docs.legmt.gov/download-ticket?ticketId=6a341bdf-a7e3-4afa-9e3a-83d5477f36b9)
- [Introduced (PDF)](https://docs.legmt.gov/download-ticket?ticketId=bec9589c-d424-4598-bd34-fcfd26b1554b)

## Related
- [SB 437: Revise definition of sex in Montana law](https://policyrisk.com/state-bill/MT-SB437-2025)
- [HB 831: Increase elderly homeowner and renter income tax credit](https://policyrisk.com/state-bill/MT-HB831-2025)
- [HB 628: Revise early literacy targeted intervention laws](https://policyrisk.com/state-bill/MT-HB628-2025)
- [SB 410: Provide for Montana genomic security act](https://policyrisk.com/state-bill/MT-SB410-2025)
- [SB 424: Revising the disabled veteran property tax assistance program](https://policyrisk.com/state-bill/MT-SB424-2025)
- [SB 422: Generally revise laws relating to insurance coverage relating to cancer](https://policyrisk.com/state-bill/MT-SB422-2025)
- [Montana bills](https://policyrisk.com/states/montana/bills)
- [Montana state hub](https://policyrisk.com/states/montana)
- [All state legislation](https://policyrisk.com/state-bills)

Source: PRIA, https://policyrisk.com/state-bill/MT-HB321-2025 (as of 2026-10-19).