Dental Hygienist Requirements in Delaware: Scope of Practice & Direct Access
Dental Hygienists in Delaware are regulated by the Board of Dentistry and Dental Hygiene. The ADHA's direct-access chart does not list a provision for Delaware; that absence is the fact on record, not a statement about what dental hygienists may or may not do there.
Verify before you rely on this
At a glance
ADHA Direct Access chart
Direct access
Not listed
ADHA Practice Act chart
Permitted functions
14 of 22
Verified September 2026
Regulated by
Board of Dentistry and Dental Hygiene
What a Dental Hygienist Can Do in Delaware: Permitted Functions & Supervision Levels
Delaware's ADHA Practice Act row puts most of what a hygienist does at general supervision, where a dentist authorizes the service in advance but need not be present.
Oral prophylaxis, x-rays, topical anesthesia, fluoride, pit/fissure sealants, scaling and root planing, soft tissue curettage, study cast impressions, placing and removing periodontal dressings, removing sutures, treatment planning, and dental hygiene assessment are all listed at general supervision — thirteen of the 22 functions.
Local anesthesia is the one exception with two levels, direct supervision in one setting and personal supervision in the other.
Eight functions are not listed on the chart for Delaware: administering nitrous oxide, placing sutures, dental hygiene diagnosis, prescriptive authority, Botox, lasers, vaccines, and dermal fillers.
- Thirteen of the 22 functions listed for Delaware, including oral prophylaxis, x-rays, and dental hygiene assessment, sit at general supervision (G), where a dentist authorizes the service in advance but need not be present.
- Local anesthesia is the only two-level cell on Delaware's Practice Act chart (D/P), direct supervision in one setting and personal supervision in the other, rather than falling under general supervision like most other functions.
- Delaware's separate Local Anesthesia chart lists local anesthesia at direct supervision only, while the Practice Act chart lists it at two levels (D/P); the two ADHA charts don't fully agree, so confirm the applicable level with the Board of Dentistry and Dental Hygiene.
- Eight functions, including dental hygiene diagnosis, prescriptive authority, and administering nitrous oxide, carry no supervision level for Delaware on the chart, which ADHA records as not listed, a narrower statement than a ban.
- G
- General supervision: dentist needs to authorize prior to services, but need not be present
- D
- Direct supervision: dentist needs to be present
- P
- Personal supervision: dentist needs to authorize, be present and check prior to patient dismissal
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 Delaware
Delaware's ADHA Local Anesthesia chart lists hygienists as authorized to administer local anesthesia since 2025, by statute, at direct supervision, meaning the dentist must be present.
The chart covers both block and infiltration injections, with education listed as board-approved.
Both the exam and the course requirement are listed as pending board regulations, so neither is finalized on the chart yet.
This differs from the Practice Act chart, which lists local anesthesia at two levels (D/P) rather than direct supervision alone.
Confirm the current status with the Board of Dentistry and Dental Hygiene before enrolling or applying.
- State & Year Implemented
- 2025
- Supervision Required
- Direct
- Block and/or Infiltration
- Both
- Education Required
- Board Approved
- Exam Required
- Pending Board Regulations
- Authorized by Statute or Rule
- Statute
- Legal Requirements for Local Anesthesia Courses
- Pending Board Regulations
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 Delaware
ADHA's silver diamine fluoride document does not name SDF for Delaware.
It quotes Title 24 Section 1101(13), the statutory definition of the practice of dental hygiene, which covers the application of chemicals to the teeth and periodontal tissues, designed and approved for the prevention of dental caries and/or periodontal disease — a general chemical-application provision that ADHA places SDF under rather than a fluoride-specific line.
ADHA lists supervision as General, meaning a dentist must authorize the application in advance but need not be present.
The quoted provision states no separate training, course, permit, or collaborative-agreement condition, and the entry lists no additional references beyond the statute.
The "practice of dental hygiene" includes the application of chemicals to the teeth and periodontal tissues, designed and approved for the prevention of dental caries and/or periodontal disease.
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 Board of Dentistry and Dental Hygiene.
Frequently Asked Questions
Does a dentist have to supervise a dental hygienist in Delaware?
The ADHA's direct-access chart does not record a provision for Delaware.
That absence is the fact on record — it is not a statement that dental hygienists cannot practice there.
Confirm supervision requirements with the Board of Dentistry and Dental Hygiene.
Who regulates dental hygienists in Delaware?
Dental Hygienists in Delaware are regulated by the Board of Dentistry and Dental Hygiene.
Scope of practice is set by state law and changes over time, so verify current rules directly with the board before relying on them.
Can a dental hygienist in Delaware give local anesthesia without a dentist present?
No. ADHA's Local Anesthesia chart lists Delaware at direct supervision, meaning the dentist must be present, and records the service as authorized by statute since 2025, covering both block and infiltration injections.
The Practice Act chart lists local anesthesia differently, at two levels (D/P), direct supervision in one setting and personal supervision in the other, since the two ADHA charts don't always agree.
Confirm the current requirement with the Board of Dentistry and Dental Hygiene before administering local anesthesia.
Does the Delaware chart list dental hygiene diagnosis or prescriptive authority?
No. Dental hygiene diagnosis and prescriptive authority are not listed on the ADHA Practice Act chart for Delaware, along with administering nitrous oxide, placing sutures, Botox, lasers, vaccines, and dermal fillers.
Not listed means the chart records no supervision level for these functions in Delaware, a narrower statement than a ban.
Treatment planning and dental hygiene assessment, by contrast, are listed at general supervision.
Confirm current scope of practice with the Board of Dentistry and Dental Hygiene.
What does 'not listed' mean for a function like Botox or vaccines in Delaware?
It means ADHA's Practice Act chart records no supervision level for that function in Delaware — not listed is a different statement from a stated level.
Botox, vaccines, dermal fillers, lasers, administering nitrous oxide, placing sutures, dental hygiene diagnosis, and prescriptive authority all fall into this not-listed category for Delaware.
The chart also doesn't say which cells carry ADHA's numbered footnotes, so a listed function could still carry a condition the chart doesn't capture.
Check with the Board of Dentistry and Dental Hygiene for the current scope of practice.
Does Delaware's dental hygiene law name silver diamine fluoride specifically?
No. ADHA's document cites Title 24 Section 1101(13), which defines the practice of dental hygiene to include applying chemicals to the teeth and periodontal tissues that are designed and approved for preventing dental caries and/or periodontal disease — a general chemical-application provision, not a line naming SDF.
ADHA places SDF's application under that provision.
Supervision is listed as General, meaning a dentist authorizes the service in advance without needing to be present, and the provision states no separate training or course condition.
Confirm current guidance with the Board of Dentistry and Dental Hygiene.
More Delaware & 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 Board of Dentistry and Dental Hygiene.