---
type: "Bill"
title: "DENTISTRY/HYGIENISTS: Provides relative to the Interstate Dental and Dental Hygiene Licensure Compact (EN +$3,700 SG RV See Note)"
description: "DENTISTRY/HYGIENISTS: Provides relative to the Interstate Dental and Dental Hygiene Licensure Compact (EN +$3,700 SG RV See Note)"
jurisdiction: "us/states/la"
legislature: "Louisiana Legislature"
session: "2025"
identifier: "HB 543"
citation: "Louisiana HB 543 (2025)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Wayne McMahen"]
version_count: 9
action_count: 21
vote_count: 2
first_action: "2025-04-04"
last_action: "2025-06-16"
source: "openstates"
source_identifier: "ocd-bill/8654c096-127b-4e32-8c29-5e64600e94ea"
source_url: "https://www.legis.la.gov/Legis/BillInfo.aspx?i=248589"
source_hash: "8e261c65bdc3a56d8844d36e482d97d884624aac6d14a9af30e20d91b54b13fe"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-la"]
---

# Louisiana HB 543 (2025) — DENTISTRY/HYGIENISTS: Provides relative to the Interstate Dental and Dental Hygiene Licensure Compact (EN +$3,700 SG RV See Note)

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **HB543 Original** (filed) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1404249)
2. **HB543 Act 312** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1425634)
3. **HB543 Engrossed** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1406059)
4. **HB543 Reengrossed** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1412666)
5. **House Committee Amendment, #1189, H&W, Draft** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1405514)
6. **House Committee Amendment, #1291, H&W, Adopted** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1405996)
7. **House Committee Amendment, #2346, H&G, Draft** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1411849)
8. **House Committee Amendment, #2417, H&G, Adopted** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1412549)
9. **HB543 Enrolled** (enrolled) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1420746)

## Votes

- FINAL PASSAGE (#378) — **95–0** (pass) · lower
- FINAL PASSAGE (#608) — **37–0** (pass) · upper

## Sponsors

- Wayne McMahen — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2025-06-16** Effective date: 08/01/2025.
- **2025-06-16** Becomes Act No. 312 without the Governor's signature. `became-law`
- **2025-06-05** Sent to the Governor for executive approval. `executive-receipt`
- **2025-06-04** Signed by the President of the Senate.
- **2025-06-03** Enrolled and signed by the Speaker of the House. `enrolled`
- **2025-06-03** Received from the Senate without amendments. `receipt`
- **2025-06-02** Read by title, passed by a vote of 37 yeas and 0 nays, and ordered returned to the House. Motion to reconsider tabled. `passage`
- **2025-06-01** Reported without Legislative Bureau amendments. Read by title and passed to third reading and final passage. `reading-3`
- **2025-05-29** Read by title and referred to the Legislative Bureau.
- **2025-05-28** Reported favorably. `committee-passage-favorable`
- **2025-05-19** Read second time by title and referred to the Committee on Health and Welfare. `reading-2, referral-committee`
- **2025-05-14** Received in the Senate. Read first time by title and placed on the Calendar for a second reading. `reading-1`
- **2025-05-13** Read third time by title, roll called on final passage, yeas 95, nays 0. Finally passed, title adopted, ordered to the Senate. `passage`
- **2025-05-12** Scheduled for floor debate on 05/13/2025.
- **2025-05-08** Read by title, amended, ordered reengrossed, passed to 3rd reading. `reading-3`
- **2025-05-07** Reported with amendments (10-0). `committee-passage-favorable`
- **2025-04-22** Read by title, amended, ordered engrossed, recommitted to the Committee on House and Governmental Affairs.
- **2025-04-16** Reported with amendments (15-0). To be recommitted to the Committee on House and Governmental Affairs. `committee-passage-favorable`
- **2025-04-14** Read by title, under the rules, referred to the Committee on Health and Welfare. `referral-committee`
- **2025-04-04** Under the rules, provisionally referred to the Committee on Health and Welfare. `referral-committee`
- **2025-04-04** Prefiled. `filing`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/8654c096-127b-4e32-8c29-5e64600e94ea`. Confidence: reported (aggregated from official Louisiana legislature records).