How to Get Your Dental Hygiene License
The pieces every state asks for, how the application works after graduation, and how to move your license to another state.
To get a dental hygiene license, you graduate from an accredited dental hygiene program, pass the National Board Dental Hygiene Examination (NBDHE), pass a clinical exam your state accepts, and apply to your state's dental board. Most states add a jurisprudence (laws and rules) exam, current CPR or BLS, and a background check.
Every state requires dental hygienists to be licensed, and the requirements vary by state (opens in a new tab) (BLS). This guide covers the parts that are the same almost everywhere, where states differ, and what to do if you move. For your state's exact steps, use the dental hygiene license requirements by state.
The building blocks of a dental hygiene license
Think of licensure as a checklist. You finish some items in school, some right after, and the board checks all of them at once when you apply.
| Requirement | Who handles it | Varies by state? |
|---|---|---|
| Degree from an accredited dental hygiene program | Your program (CODA accreditation) | Rarely. Most states require a CODA-accredited program. |
| NBDHE (written exam) | Joint Commission on National Dental Examinations (JCNDE) | No. It's the same national exam everywhere. |
| Clinical exam | A testing agency such as ADEX or CRDTS | Yes. Each state lists the clinical exams it accepts, and a few waive it for recent graduates of their own programs. |
| Jurisprudence (laws and rules) exam | Your state board | Yes. Most states require one; some don't. |
| CPR / BLS certification | A CPR provider (often through school) | Often. Boards differ on which courses they accept. |
| Background check and fingerprints | Your state board and its vendor | Yes. Timing and method differ. |
| Application, transcripts, and fees | Your state board | Yes. Forms, fees, and documents differ. |
| Local anesthesia or nitrous oxide permit | Your state board | Yes. Often a separate permit with its own course. |
Degree from an accredited program
Your program sends proof of graduation, usually a final transcript, straight to the board. Boards generally won't issue a license until your degree is posted, so ask your program when final transcripts go out.
The NBDHE
The NBDHE is the national written exam. It has 350 multiple-choice questions and costs $600 as of the JCNDE 2026 Candidate Guide (opens in a new tab). Most students take it near the end of their program. Our dental hygiene board exam guide covers the format, scoring, and how to study.
The clinical exam
The clinical exam tests your hands-on skills. The two main exams are ADEX and CRDTS. CDCA-WREB-CITA merged with ADEX to form the American Board of Dental Examiners (ADEX), which says its exam is "required or recognized by law for licensure in nearly every U.S. jurisdiction" (ADEX (opens in a new tab)). Many states also accept CRDTS, which absorbed SRTA in 2025. California doesn't require a separate clinical exam from graduates of its board-approved programs within the past 3 years (DHBC (opens in a new tab)). Confirm your state takes your exam before you register.
Jurisprudence, CPR, and background check
A jurisprudence exam tests your state's dental practice laws. Formats and timing vary, and some states offer it online. Keep your CPR or BLS card current, since an expired card can hold up your application. Background checks often need fingerprints, so schedule them early.
Typical timeline from graduation to first paycheck
There's no single timeline. Board processing times vary by state and by time of year, and boards are often busiest right after spring graduation. What you control is the order and how early you start.
- Final year of school: take the NBDHE, register for your clinical exam, and read your state board's application checklist.
- Around graduation: take the clinical exam if you haven't, finish the jurisprudence exam if your state has one, and start your background check.
- Right after graduation: confirm your transcript, NBDHE results, and clinical exam results were sent to the board, then submit the application and fees.
- While you wait: watch for emails from the board asking for missing items, and start interviewing. Some offices make offers pending licensure, but you can't practice as a hygienist until the license is issued.
- License issued: verify it on the board's public lookup, then give your employer the license number.
The most common delay is one missing document. Make a list of every item your board wants and check each one off as it arrives. BrushNotes State Rules shows your state's license steps, accepted exams, and CE rules, with links to the board sources.
Where states differ
The NBDHE is national. Almost everything else can change at the state line. Check these four things for any state you plan to work in:
- Clinical exams accepted. Nearly every state accepts ADEX, and many also accept CRDTS. A few states have exceptions, such as California's waiver for recent graduates of its own programs.
- Jurisprudence exam. Most states require one, and some require it again later. Texas, for example, requires a jurisprudence assessment for licensure and again every 4 years at renewal.
- State-specific exams and certificates. California, for example, requires its own Law and Ethics exam and radiation safety certification (DHBC (opens in a new tab)).
- Local anesthesia and nitrous oxide. Rules vary widely. In many states you need a separate permit with its own board-approved course. In others, such as California, local anesthesia is part of the hygienist license. If you move, check how your new state treats the training you already have.
See the full steps for Texas and California, or pick your state from the license requirements by state page.
Moving states: licensure by credentials
A license only lets you practice in the state that issued it. To work in a new state, you apply there. Most states offer licensure by credentials (also called licensure by endorsement or reciprocity): you use your current license and practice history instead of retaking every exam. A few states, such as Florida, don't, so check the new state first.
Requirements differ, but expect some mix of these:
- An active license in good standing, with verification sent from your current board.
- A minimum amount of recent clinical practice.
- Proof you passed the NBDHE and a clinical exam. If your old clinical exam isn't one the new state accepts, you may need another.
- The new state's jurisprudence exam, CPR or BLS, and a background check.
- A separate local anesthesia permit application if you want to keep giving anesthesia.
Start before you move. Keep your current license active until the new one is issued, and keep copies of your exam results and CE records.
The Dentist and Dental Hygienist Compact
The Dentist and Dental Hygienist Compact is an agreement between states that will let a licensed hygienist get a privilege to practice in other member states without a full new license. Oklahoma became the 13th state to enact it on May 13, 2026, but privileges to practice are not issued yet because the compact's commission is still building its data system (DDH Compact (opens in a new tab)).
More states have compact bills pending. Until privileges are available, you still need licensure by credentials in each state. Check compact status for each state on the license requirements by state page.
After you're licensed: renewal and CE
Your license has an expiration date, and renewal almost always requires continuing education (CE). Most states use a two-year cycle, and the hours, required topics, and online limits vary. Start logging CE from your first renewal cycle. Our dental hygienist continuing education guide explains how it works, and the CE requirements by state list your state's hours.
How to verify a dental hygiene license
State boards offer a public license lookup. Use it to confirm your own license after it's issued and to check that your record shows the right name, status, and permits. Employers use the same lookup. Find your board's link on your state's page in the license requirements by state.
Frequently asked questions
How long does it take to get a dental hygiene license?
It depends on your state and when you apply. After you graduate and pass the NBDHE and a clinical exam, the rest is paperwork and board processing, which is often slowest right after spring graduation. Start your application and background check as early as your board allows so the only thing left is your final transcript.
Can I use my dental hygiene license in another state?
Not directly. A license is valid only in the state that issued it. To work elsewhere, you apply for a license in the new state, usually through licensure by credentials. The Dentist and Dental Hygienist Compact will allow practice across member states, but it isn't issuing privileges yet.
What is licensure by credentials?
It's a way to get a license in a new state based on your current license and practice history, without retaking every exam. States usually want an active license in good standing, recent practice hours, proof of passing exams, and their own jurisprudence exam and background check. Details vary, so check the license requirements by state.
What is the jurisprudence exam?
It's a test on your state's dental practice laws and rules, such as scope of practice and supervision. Most states require one, formats vary, and some states require it again later. Texas, for example, requires it every 4 years. Check your state in license requirements by state.
What is the dental hygiene compact?
The Dentist and Dental Hygienist Compact will let a hygienist licensed in one member state practice in the others with a compact privilege. As of September 2026, 13 states have enacted the Dentist and Dental Hygienist Compact: Arkansas, Colorado, Iowa, Kansas, Maine, Minnesota, Nebraska, Ohio, Oklahoma, Tennessee, Virginia, Washington, and Wisconsin. Privileges to practice aren't issued yet, so you still need a license in each state where you work. See each state's status on the license requirements by state page.
Do I need a separate local anesthesia permit?
In many states, yes. Local anesthesia is often a separate permit or certification with its own board-approved course, applied for with or after your hygiene license. In other states, such as California, it's part of the hygienist license. Rules vary widely, so check your state's page before you graduate.