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---
type: "Bill"
title: "Dental Hygienist Apply Silver Diamine Fluoride"
description: "The bill allows a dental hygienist to apply silver diamine fluoride under the direct or indirect supervision of a dentist if the dental hygienist:"
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2018A"
identifier: "HB 18-1045"
citation: "Colorado HB 18-1045 (2018A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Jack Tate", "Jonathan Singer"]
version_count: 9
action_count: 15
vote_count: 2
first_action: "2018-01-10T07:00:00+00:00"
last_action: "2018-03-22T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/a0f91cb3-775b-4784-a7d6-a73ac99b46b8"
source_url: "http://leg.colorado.gov/bills/hb18-1045"
source_hash: "6a903667b0a1a064f2c7bea3394c18229c007f98c75a8d8e478de701892248e4"
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-co"]
---
# Colorado HB 18-1045 (2018A) — Dental Hygienist Apply Silver Diamine Fluoride
The bill allows a dental hygienist to apply silver diamine fluoride under the direct or indirect supervision of a dentist if the dental hygienist:
## Version chain
The bill's text revisions, in order — the diff chain from filing to enrollment.
1. **Committee Amendment** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018a/bills/cr/2018a_hb1045_s_blt_001.pdf)
2. **Engrossed (02/12/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045_eng.pdf)
3. **Final Act (03/19/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045_enr.pdf)
4. **Introduced (01/10/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045_01.pdf)
5. **PA1 (02/08/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045phc_01.pdf)
6. **Reengrossed (02/13/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045_ren.pdf)
7. **Rerevised (03/13/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045_rer.pdf)
8. **Revised (03/08/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045_rev.pdf)
9. **Signed Act (03/22/2018)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_1045_signed.pdf)
## Votes
- BILL — **600** (pass) · upper
- BILL — **350** (pass) · upper
## Sponsors
- Jack Tate — primary (person)
- Jonathan Singer — primary (person)
## Timeline
The legislative action history — every referral, reading, and vote.
- **2018-03-22T06:00:00+00:00** Governor Signed `executive-signature`
- **2018-03-19T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2018-03-19T06:00:00+00:00** Signed by the President of the Senate
- **2018-03-19T06:00:00+00:00** Signed by the Speaker of the House
- **2018-03-13T06:00:00+00:00** Senate Third Reading Passed - No Amendments `reading-3, passage`
- **2018-03-12T06:00:00+00:00** Senate Third Reading Laid Over Daily - No Amendments
- **2018-03-09T07:00:00+00:00** Senate Third Reading Laid Over Daily - No Amendments
- **2018-03-08T07:00:00+00:00** Senate Second Reading Passed - No Amendments `reading-2`
- **2018-03-05T07:00:00+00:00** Senate Committee on Business, Labor, & Technology Refer Unamended to Senate Committee of the Whole `referral-committee, committee-passage`
- **2018-02-21T07:00:00+00:00** Introduced In Senate - Assigned to Business, Labor, & Technology `introduction`
- **2018-02-13T07:00:00+00:00** House Third Reading Passed - No Amendments `reading-3, passage`
- **2018-02-12T07:00:00+00:00** House Second Reading Passed with Amendments - Committee, Floor `reading-2`
- **2018-02-09T07:00:00+00:00** House Second Reading Laid Over to 02/12/2018 - No Amendments
- **2018-02-06T07:00:00+00:00** House Committee on Public Health Care & Human Services Refer Amended to House Committee of the Whole `referral-committee, committee-passage`
- **2018-01-10T07:00:00+00:00** Introduced In House - Assigned to Public Health Care & Human Services `introduction`
## Source
OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/a0f91cb3-775b-4784-a7d6-a73ac99b46b8`. Confidence: reported (aggregated from official Colorado legislature records).