The pay gap in one table
Both numbers come from the BLS Occupational Outlook Handbook, which uses wage data from the Occupational Employment and Wage Statistics (OEWS) survey. For May 2025 the Handbook gives dental hygienists a median annual wage of $98,100 and dental assistants $48,070. The median is the point where half of workers earned more and half earned less.
That works out to a gap of $50,030 a year, and the hygienist median is about 2.04 times the assistant median. Those two figures are our arithmetic on the BLS numbers. The gap holds across the distribution: the lowest-paid tenth of hygienists earned less than $74,880, which is still more than the top tenth of assistants, who earned more than $62,250.
| Measure (BLS, May 2025 unless noted) | Dental hygienists | Dental assistants |
|---|---|---|
| Median annual wage | $98,100 | $48,070 |
| Median hourly wage | $47.16 | $23.11 |
| Lowest 10% earned less than | $74,880 | $37,130 |
| Highest 10% earned more than | $126,050 | $62,250 |
| Jobs in 2025 | 225,300 | 388,600 |
| Share working in dentists' offices | 94% | 91% |
| Projected growth, 2025 to 2035 | 8% | 7% |
| Openings per year, on average | About 15,000 | About 53,000 |
| Typical entry-level education | Associate's degree | Postsecondary nondegree award |
For context, BLS gives a May 2025 median of $50,980 for all occupations. Dental assistants sit just under that line and above the $46,180 median for other healthcare support occupations, while dental hygienists sit near the $103,500 median for healthcare diagnosing or treating practitioners.
Hourly pay and part-time work
The hourly comparison is often the more useful one for these jobs. Hygienists earned a median of $47.16 an hour in May 2025 and assistants $23.11, so a hygienist's median hour pays about $24 more.
The annual figures assume a full year of full-time work. The OEWS program's frequently asked questions page says its annual wage estimates assume a full-time, year-round schedule of 2,080 hours, and $47.16 times 2,080 lands within a few dollars of the $98,100 median. The same page notes that the survey counts both part-time and full-time workers, and that full-time workers tend to earn higher hourly wages than part-time workers in the same occupation. That matters because the work patterns differ. The Handbook says many dental hygienists work part time, and that dentists may hire hygienists for only a few days a week, so some work for more than one dentist. Most dental assistants work full time, and some work evenings or weekends.
In practice, a part-time hygienist will take home less than the annual median, even at the median hourly rate. The Handbook also notes that benefits such as vacation, sick leave and retirement contributions vary by employer for hygienists and may be available only to full-time workers.
Pay by workplace
Almost everyone in both jobs works in a dental office. BLS says offices of dentists employed 94% of hygienists and 91% of assistants in 2025. The Handbook also lists median wages for each job in its top industries.
| Industry | Dental hygienists | Dental assistants |
|---|---|---|
| Offices of dentists | $98,280 | $48,000 |
| Offices of physicians | $91,160 | $47,310 |
| Government, excluding state and local education and hospitals | $80,830 | $55,270 |
The two jobs rank workplaces differently. Hygienists earn their highest median in dentists' offices, at $98,280, and less in government, at $80,830. Assistants earn the most in government, at $55,270, against $48,000 in dentists' offices. Because so few people in either job work outside dental offices, the dental-office medians are the ones most job seekers will meet.
Training and licensing compared
The two jobs ask for very different preparation. Dental hygienists typically need an associate's degree in dental hygiene, and BLS says programs usually take three years to complete, with laboratory, clinical and classroom instruction in subjects such as anatomy, medical ethics and periodontics, the study of gum disease. Every state requires hygienists to be licensed. In most states that means a degree from an accredited program and passing written and clinical exams, and hygienists must complete continuing education to keep the license.
Dental assistants have several routes in. Some states require them to graduate from an accredited program and pass an exam; in others there is no formal education requirement and assistants learn on the job from a dentist, hygienist or experienced assistant. Many assisting programs take about a year and lead to a certificate or diploma, while two-year associate's programs are less common. States typically do not require a license for entry-level assistants, though some require licensing, registration or certification for advancement or for specialties such as radiography.
So the comparison is roughly three years of college plus a license against about one year of training, or none. Set that against the $50,030 difference in median pay when you weigh the two careers. The Handbook adds that a bachelor's or master's degree in dental hygiene is usually required for research, teaching or clinical work in public or school health programs. For assistants who want certification, applicants must pass an exam, hold current CPR certification and have either graduated from an accredited program or have a high school diploma plus the required work experience; states that allow expanded duties such as coronal polishing require assistants to be licensed, registered or certified. Our dental hygienist salary guide and dental assistant pay page look at each job separately.
What each job does in the chair
BLS says hygienists remove tartar, stains and plaque, apply sealants and fluorides, take and develop dental x-rays, assess patients' oral health and report findings to dentists, and teach patients how to brush and floss. They use hand, power and ultrasonic tools, and in some cases lasers. A few states allow hygienists with extra training, sometimes called dental therapists, to do some restorative work such as extracting primary teeth and placing temporary crowns.
Dental assistants, in the Handbook's description, prepare patients and the work area, sterilize instruments, hand instruments to the dentist, keep the patient's mouth dry with suction, process x-rays and do lab tasks under a dentist's direction, keep treatment records, schedule appointments and handle billing. Each state sets their scope of practice; some states let assistants polish teeth or apply sealants, fluoride or topical anesthetic. Assistants work under the supervision of dentists and closely with hygienists.
Both jobs share the same protective routine. BLS says hygienists and assistants wear safety glasses, surgical masks and gloves to protect themselves and patients from infectious diseases, and both follow procedures to limit risks from x-ray machines. The Handbook lists dexterity and interpersonal skills as important qualities for both, since the work happens in tight spaces with patients who may be anxious or in pain.
Job outlook for both
BLS projects similar growth for the two jobs: 8% for hygienists and 7% for assistants from 2025 to 2035, both classed as much faster than the 3% average. In raw numbers, assistants have far more openings, about 53,000 a year against about 15,000 for hygienists. BLS expects many openings in both jobs to come from replacing workers who move to other occupations or leave the labor force, for example to retire.
The Handbook links demand for both jobs to an aging population and to people keeping more of their original teeth than earlier generations did. For hygienists it adds that state laws increasingly allow them to work at the top of their training. These are national figures for May 2025; the OEWS program updates its estimates every year and publishes them for each state, so check your own state before comparing offers.
Dental cluster cross-links
Dentist comparison: dental hygienist vs dentist.