Dental Hygienist Requirements in Ohio: Scope of Practice & Direct Access
Dental Hygienists in Ohio are regulated by the Ohio State Dental Board. The ADHA records 2 direct-access provisions for Ohio — Oral Health Access Supervision Permit Program (Sec. 4715.363); 2013 provision (Sec. 4715.22) — the rules that decide whether a dental hygienist there can work without a dentist on site; see below for what they cover.
Verify before you rely on this
At a glance
ADHA Direct Access chart
Direct access
Yes
Differ in scope — see below
Provisions
2
ADHA Practice Act chart
Permitted functions
13 of 22
Verified September 2026
Regulated by
Ohio State Dental Board
Ohio’s Direct-Access Provisions (2)
Oral Health Access Supervision Permit Program
Dental hygienist who possess an oral health access supervision permit may provide dental hygiene services through a written agreement with a dentist in public health settings including, and not limited to a health care facility, state correctional institution, residential facility, school, shelter for victims of domestic abuse or runaways, foster home, non-profit clinic, dispensary or mobile dental clinic.
Prior to providing services, a dental hygienist with an oral health access supervision permit must have a written agreement with a dentist, who possesses an oral health supervision permit, that states the dentist has evaluated the dental hygienist's skills and the dentist has reviewed and evaluated the patient's health history.
The dentist need not be present or examine the patient before the dental hygienist may provide care.
The collaborating dentist must perform a clinical evaluation of the patient before the dental hygienist may provide subsequent care.
The evaluation may be done using electronic communication.
Provider services: Prophylactic, preventive and other procedures a dentist can delegate to a dental hygienist except definitive root planing, definitive subgingival curettage, administration of local anesthesia and other procedures specified in rules adopted by the board.
Requirements: One year and a minimum of 1,500 hours of clinical experience, minimum of 24 continuing education credits during the two years prior to apply for the oral health access supervision permit including an eight hour course as required by the board.
2013 provision
The requirement for a dentist to perform an examination and diagnose a patient prior to the patient receiving dental hygiene services through a program operated by a school district or other specified entity does not apply when the only services to be provided are the placement of pit and fissure sealants.
What a Dental Hygienist Can Do in Ohio: Permitted Functions & Supervision Levels
Ohio's ADHA chart spreads its 22 hygiene functions across several supervision levels rather than clustering at one.
Oral prophylaxis, x-rays, fluoride, placing and removing periodontal dressings, and removing sutures sit at general supervision, where a dentist authorizes the service in advance but need not be present.
Pit/fissure sealants, scaling and root planing, soft tissue curettage, and study cast impressions require direct supervision, with the dentist present.
Local anesthesia is listed at indirect supervision: the dentist must authorize it and be in the dental office while it is performed.
Topical anesthesia and administering nitrous oxide are two-level cells that vary by private or public setting.
Placing sutures, dental hygiene diagnosis, treatment planning, dental hygiene assessment, prescriptive authority, Botox, lasers, vaccines, and dermal fillers are not listed on Ohio's chart.
- Local anesthesia is listed at indirect supervision (ID) for Ohio, meaning the dentist must authorize it and be in the dental office while it is performed, without necessarily standing chairside.
- Four functions — pit/fissure sealants, scaling and root planing, soft tissue curettage, and study cast impressions — sit at direct supervision (D), the level requiring the dentist to be present.
- Topical anesthesia (G/A) and administering nitrous oxide (D/P) are two-level cells for Ohio, so the required supervision changes depending on whether the setting is private or public.
- Dental hygiene diagnosis, treatment planning, dental hygiene assessment, prescriptive authority, placing sutures, Botox, lasers, vaccines, and dermal fillers all carry no supervision level on Ohio's chart, which ADHA records as not listed rather than prohibited.
- G
- General supervision: dentist needs to authorize prior to services, but need not be present
- ID
- Indirect supervision: dentist must authorize procedure and be in the dental office while the procedure is performed
- A
- Direct access: hygienists can provide services as s/he determines appropriate without specific authorization
- 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 Ohio
Ohio's Local Anesthesia chart lists 2006 as the year hygienists were authorized to administer it, by statute.
Supervision is direct, meaning the dentist must be present, and both block and infiltration injections are covered.
Education must come from an accredited program, and the chart lists a written regional or state exam requirement.
Course requirements are 15 hours didactic and 14 hours clinical.
Confirm current permit and course rules with the Ohio State Dental Board before enrolling or applying.
- State & Year Implemented
- 2006
- Supervision Required
- Direct
- Block and/or Infiltration
- Both
- Education Required
- Accredited
- Exam Required
- Yes – Written regional or state exam
- Authorized by Statute or Rule
- Statute
- Legal Requirements for Local Anesthesia Courses
- 15 hrs didactic; 14 hrs clinical
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 Ohio
Ohio's ADHA silver diamine fluoride entry names SDF directly rather than folding it under fluoride: the provision states that a dental hygienist may apply SDF after completing a board-approved course.
ADHA cites the scope-of-practice authority as 4715.23 & 4715.431 and records supervision as Assignment and Teledentistry.
The provision's only stated condition is the completed board-approved course; it does not name the course's length, content, or provider, and it lists no separate board reference beyond the two statute sections.
Confirm which course the board currently approves, and how the assignment and teledentistry supervision terms apply, with the Ohio State Dental Board before applying SDF.
Dental hygienist may apply SDF after completing board-approved course.
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 Ohio State Dental Board.
Frequently Asked Questions
Does a dentist have to supervise a dental hygienist in Ohio?
It depends on which provision applies.
Under the 2010/2014/2017 Oral Health Access Supervision Permit Program (Sec. 4715.363), a dentist need not be present or examine the patient before the hygienist provides care, but the hygienist must hold an oral health access supervision permit, work under a written agreement with a permit-holding dentist, and provide services only in specified public health settings (schools, correctional institutions, non-profit clinics, mobile dental clinics, and similar).
Under the 2013 provision (Sec. 4715.22), a dentist's prior examination and diagnosis isn't required, but only when the sole service provided through a school-district (or other specified entity) program is the placement of pit and fissure sealants.
Neither is an unconditional "no supervision needed." Confirm current details with the Ohio State Dental Board.
Who regulates dental hygienists in Ohio?
Dental Hygienists in Ohio are regulated by the Ohio State Dental Board.
Scope of practice is set by state law and changes over time, so verify current rules directly with the board before relying on them.
Does Ohio's chart list dental hygiene diagnosis or prescriptive authority for hygienists?
No. Dental hygiene diagnosis, dental hygiene assessment, treatment planning, and prescriptive authority all carry no supervision level on Ohio's ADHA chart, which is recorded as not listed rather than prohibited.
What a hygienist may do in these areas under Ohio law is a separate question from what appears on this chart.
Confirm the current scope with the Ohio State Dental Board.
Why do topical anesthesia and administering nitrous oxide show two supervision levels for Ohio?
ADHA's chart marks Ohio's topical anesthesia cell G/A and its administer-N2O cell D/P, and a multi-letter cell means two separate supervision levels depending on the setting — private or public practice.
So the level a hygienist works under for either function depends on where the care is delivered, not a single fixed rule.
The chart doesn't say which setting maps to which letter, so ask the Ohio State Dental Board which applies to your practice setting.
Does Ohio's chart mean Botox, vaccines, lasers, or dermal fillers are prohibited for hygienists?
No. Botox, vaccines, lasers, and dermal fillers all carry a dash on Ohio's ADHA chart, and ADHA's own note defines a dash as not listed as permitted — not the same as prohibited.
The chart simply doesn't address these functions for Ohio one way or the other.
Confirm whether Ohio law allows a hygienist to perform any of them with the Ohio State Dental Board.
Does Ohio require training before a hygienist can apply silver diamine fluoride?
Yes.
ADHA's entry states that a dental hygienist may apply SDF only after completing a board-approved course; it does not specify the course's length or provider.
The entry cites 4715.23 & 4715.431 as the scope-of-practice authority and lists supervision as Assignment and Teledentistry.
Ask the Ohio State Dental Board which course currently satisfies that requirement and how the assignment and teledentistry supervision terms are applied in practice.
More Ohio & 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 Ohio State Dental Board.