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---
type: "Bill"
title: "Dentistry: oral conscious sedation."
description: "Dentistry: oral conscious sedation."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20012002"
identifier: "AB 564"
citation: "California AB 564 (20012002)"
classification: ["bill"]
subjects: ["Dentistry: oral conscious sedation."]
status: "enacted"
primary_sponsors: ["Lowenthal"]
version_count: 8
action_count: 26
vote_count: 6
first_action: "2001-02-21"
last_action: "2001-09-19"
source: "openstates"
source_identifier: "ocd-bill/1af51c13-1935-4e57-a85c-3832e1307023"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200120020AB564"
source_hash: "83349364a5c0968d4bd7005692bc611245ae2f693ccc2419b252520c060be77e"
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-ca"]
---
# California AB 564 (20012002) — Dentistry: oral conscious sedation.
## Version chain
The bill's text revisions, in order — the diff chain from filing to enrollment.
1. **02/21/01 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB564&version=20010AB56499INT)
2. **03/27/01 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB564&version=20010AB56498AMD)
3. **04/17/01 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB564&version=20010AB56497AMD)
4. **05/21/01 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB564&version=20010AB56496AMD)
5. **07/17/01 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB564&version=20010AB56495AMD)
6. **09/19/01 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB564&version=20010AB56493CHP)
7. **AB564** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200120020AB564)
8. **08/31/01 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200120020AB564&version=20010AB56494ENR)
## Votes
- Do pass as amended and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower
- AB 564 Lowenthal Assembly Third Reading — **pass** (pass) · lower
- Do pass as amended, and re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Assembly 3rd Reading AB564 Lowenthal By Romero — **pass** (pass) · upper
- Do pass as amended. — **pass** (pass) · lower
- AB 564 Lowenthal Concurrence in Senate Amendments — **pass** (pass) · lower
## Sponsors
- Lowenthal — primary (person)
## Timeline
The legislative action history — every referral, reading, and vote.
- **2001-09-19** Chaptered by Secretary of State - Chapter 308, Statutes of 2001.
- **2001-09-18** Approved by the Governor. `executive-signature`
- **2001-09-13** Enrolled and to the Governor at 4:30 p.m.
- **2001-08-31** Senate amendments concurred in. To enrollment. (Ayes 50. Noes 25. Page 3366.) `committee-passage-favorable, amendment-passage`
- **2001-08-29** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 31 pursuant to Assembly Rule 77.
- **2001-08-28** Read third time, passed, and to Assembly. (Ayes 24. Noes 10. Page 2475.) `passage, reading-1, reading-3`
- **2001-08-22** Read second time. To third reading. `reading-2, reading-1`
- **2001-08-21** From committee: Be placed on second reading file pursuant to Senate Rule 28.8. `committee-passage`
- **2001-07-17** Read second time, amended, and re-referred to Standing Committee on Appropriations. `reading-2, reading-1, referral-committee, amendment-passage`
- **2001-07-16** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 6. Noes 0.). `amendment-introduction, referral-committee, committee-passage, amendment-passage`
- **2001-06-20** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2001-06-05** Referred to Standing Committee on Business, Professions and Consumer Protection. `referral-committee`
- **2001-05-24** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **2001-05-24** Read third time, passed, and to Senate. (Ayes 53. Noes 7. Page 1795.) `passage, reading-1, reading-3`
- **2001-05-22** Read second time. To third reading. `reading-2, reading-1`
- **2001-05-21** Read second time and amended. Ordered returned to second reading. `reading-2, amendment-passage, reading-1`
- **2001-05-17** From committee: Amend, and do pass as amended. (Ayes 14. Noes 0.) (May 16). `amendment-introduction, committee-passage, amendment-passage`
- **2001-05-09** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2001-04-24** Re-referred to Standing Committee on Appropriations. `referral-committee`
- **2001-04-17** Read second time and amended. `reading-2, amendment-passage, reading-1`
- **2001-04-16** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 9. Noes 2.) (April 3). `amendment-introduction, referral-committee, committee-passage, amendment-passage`
- **2001-03-29** Re-referred to Standing Committee on Health. `referral-committee`
- **2001-03-27** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Health. Read second time and amended. `reading-2, referral-committee, reading-1, amendment-introduction, amendment-passage`
- **2001-03-05** Referred to Standing Committee on Health. `referral-committee`
- **2001-02-22** From printer. May be heard in committee March 24.
- **2001-02-21** Read first time. To print. `reading-1`
## Source
OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/1af51c13-1935-4e57-a85c-3832e1307023`. Confidence: reported (aggregated from official California legislature records).