How to become a dental hygienist

1. 1Take science and math in high school

   Time: 4 years (high school)Sources 1

   Biology, chemistry and algebra are the most useful high school courses, because dental hygiene programs build on them right away. If your school offers anatomy, health science or dual-enrollment college science, take it; some of those credits may count toward program prerequisites later. Shadowing a hygienist for a day or two shows you what the chairside work looks like, and some programs ask for observation hours as part of the application.

2. 2Complete the prerequisite courses

   Time: About 1 yearCost: Community college tuitionSources 3

   Most dental hygiene programs require college-level prerequisites before you can apply. ADHA lists anatomy, physiology, chemistry and microbiology as typical, and many schools add English, psychology or nutrition. A community college is the usual place to take them. Grades in these science courses carry a lot of weight in admissions, so it often pays to take them one or two at a time rather than rushing. Check each target program's list, because requirements differ from school to school.

3. 3Get into a CODA-accredited dental hygiene program

   Time: Application cycle of several monthsCost: Application feesSources 8, 4, 2, 3

   The national board exam is open to students and graduates of programs accredited by the Commission on Dental Accreditation (CODA); other graduates must prove their training was equivalent. Check accreditation first using CODA's program search. Programs have limited clinic chairs and admit small classes, and ADHA notes that some have waiting lists. Apply to more than one program, and get on any waiting list while you finish prerequisites. Strong science grades and observation hours help an application stand out.

4. 4Finish the dental hygiene program

   Time: 2 years (associate) or 4 years (bachelor's)Cost: $4,636/yr median public in-state tuition (associate)Sources 2, 9

   The program mixes classroom work in oral anatomy, radiology, pharmacology, periodontics and dental materials with lab practice on manikins and supervised clinic sessions on real patients. In the clinic you must find and treat your own patients to meet requirements, which can be harder than the coursework. Expect a full-time schedule with little room for a regular job, plus costs for instruments, uniforms and loupes.

5. 5Pass the National Board Dental Hygiene Examination

   Time: Usually near or just after graduationCost: $600 (2026)Sources 4

   The NBDHE is a 350-question multiple-choice exam given in two sessions, with 7.5 hours of testing time, run by the Joint Commission on National Dental Examinations. It tests the science behind practice and includes case-based questions on patient care. JCNDE expects updated test specifications in November 2026 and says they are not expected to change preparation substantially. The fee covers score reports to three licensing jurisdictions chosen when you apply.

6. 6Pass a clinical exam and apply for your state license

   Time: 1-3 monthsCost: $1,150-$1,175 exam fee plus facility and license feesSources 5, 6, 7, 10

   States require a hands-on clinical exam as well. The main options are the ADEX Dental Hygiene Examination from CDCA-WREB-CITA ($1,150 in 2026, plus a $150 typodont fee and a facility fee), the CRDTS exam ($1,175, site fees extra) and JCNDE's newer DHLOSCE, which only a few states accept so far. Check which exams your state board takes before you register, then submit your scores, transcript and application to the board.

Programs, tuition and graduates’ earnings

U.S. Department of Education, College Scorecard (most recent cohorts, released 2026-10-15). Scorecard groups programs by 4-digit field, so a row can include related programs. Tuition is the median published undergraduate tuition and fees of the colleges offering the program (shown only for undergraduate credentials); debt is the median of programs’ median federal loan debt at completion; earnings are the national median for the field and credential four years after completion.

Requirements differ by state. Check your state’s rules in the CareerOneStop License Finder (U.S. Department of Labor) before you enroll.

Fine motor control

Scaling below the gumline means working with sharp instruments in a space a few millimeters wide, often without seeing the tip directly.

Clinical judgment

Pocket depths, bleeding points and x-ray findings have to be read together so the dentist gets an accurate picture of gum disease.

Calm patient communication

Many patients are anxious or in pain, and a hygienist who explains each step keeps them still and willing to return.

Teaching home care

Most of the long-term result depends on what patients do between visits, so hygienists must show brushing and flossing in a way people actually follow.

Physical stamina

Leaning over a chair for eight or more cleanings a day strains the neck, back and wrists unless you keep good posture and use loupes.

Infection control discipline

Every instrument, surface and x-ray sensor must be cleaned or sterilized correctly between patients to protect everyone in the office.

O*NET 31.0 rates these skills as most important for the occupation: active listening, speaking, critical thinking, writing, monitoring.

Training cost

$15.7K–$40.5K

Before financial aid

Time

3 years

Typical path

Median pay

$98,100

All US jobs: $50,980

Payback once qualified

Under 1 year

Pay above the all-jobs median vs. cost

Low: 3 years (prerequisites plus a 2-year program) x College Scorecard median published in-state tuition at public colleges for associate programs in the Dental Support Services and Allied Professions family (which also includes dental assisting), $4,636 = $13,908, plus the NBDHE fee of $600 and the ADEX hygiene exam fee of $1,150. High: 4 years x the same family's bachelor's median, $9,693 = $38,772, plus $600 and the CRDTS exam fee of $1,175. Not included: the ADEX typodont fee ($150), exam facility or site fees, program fees, instrument kits, state license fees, books and living costs. Private programs can cost much more.

Rough guide only: ignores taxes, aid, interest and earnings given up during training. How we calculate it.

• Dentist$170,950 median

  Requires the college science prerequisites for dental school and then a full DDS or DMD program. A hygiene background helps with clinical skills but does not shorten dental school.

• Orthodontist$289,140 median

  Takes dental school first, then a postdoctoral residency in orthodontics.

• Dental hygiene educator or program director

  CODA standards require a bachelor's degree or higher to teach classroom courses in an accredited hygiene program (an associate degree can be enough for clinic-only teaching) and a master's degree to direct a program.

• Public health or school dental hygienist

  BLS says a bachelor's or master's degree is usually required for clinical work in public health and school programs. What hygienists may do outside a dental office, and under what supervision, varies by state.