How to Become a Dental Hygienist in California: A Complete Guide
Introduction
California is one of the most rewarding states in the country to practice dental hygiene. With competitive salaries that rank among the highest nationally, strong job growth projections, and a diverse patient population, the Golden State offers exceptional opportunities for those entering the profession. Whether you are a high school student exploring career paths, a career changer looking for stability, or a dental professional considering a move to California, this guide walks you through every step of the process.
The dental hygiene profession is regulated in California by the Dental Hygiene Board of California (DHBC), which operates under the California Department of Consumer Affairs. The DHBC oversees licensure, continuing education, and the scope of practice for all categories of dental hygienists in the state. It is a criminal offense to practice dental hygiene in California without holding an active RDH license.
This guide covers the educational requirements, licensure examinations, application process, scope of practice, salary expectations, career advancement pathways, and continuing education obligations you will need to navigate on your journey to becoming a Registered Dental Hygienist (RDH) in California.
Step 1: Complete an Accredited Dental Hygiene Program
The first and most critical step is graduating from a dental hygiene program that is both accredited by the Commission on Dental Accreditation (CODA) and approved by the Dental Hygiene Board of California. California currently has approximately 25 CODA-accredited dental hygiene programs located at community colleges, universities, and private institutions throughout the state.
Types of Entry-Level Programs
Associate Degree Programs: The most common pathway. These programs typically take two to three years to complete (including prerequisites) and require an average of approximately 84 credit hours. They are offered primarily at community colleges and prepare graduates for clinical practice and licensure.
Bachelor’s Degree Programs: Several California schools now offer four-year entry-level bachelor’s degree programs in dental hygiene. These programs average around 120 credit hours and provide broader preparation in research, public health, and leadership in addition to clinical skills. A bachelor’s degree opens more career paths in education, administration, and public health settings.
Common Prerequisites
Most dental hygiene programs in California require completion of general education and science prerequisites before admission. While exact requirements vary by school, the following courses are typically required:
- General Biology with laboratory
- General Chemistry with laboratory (some programs require two semesters)
- Anatomy and Physiology (usually two semesters with labs)
- Microbiology with laboratory
- English Composition
- Speech or Communication
- Introduction to Psychology or Sociology
- College-level Math or Statistics
Important Note: Beginning in January 2026, several California programs require that all prerequisite science courses with laboratory components be completed in a face-to-face wet laboratory setting. Online or hybrid lab formats that were accepted during the pandemic waiver period (Spring 2020 through Spring 2022) may no longer qualify. Check with your target program for their specific policy.
Admission is Competitive
Dental hygiene programs in California are highly competitive. Programs typically accept between 20 and 40 students per cohort, and they receive far more qualified applicants than they can accommodate. Many schools use a combination of GPA ranking, prerequisite completion, observation hours, and lottery or rubric-based selection processes to determine admission.
Some programs, such as Oxnard College, require applicants to have already earned an associate degree with at least 60 semester units and completed a general education pattern (Cal-GETC, IGETC, or CSU GE-Breadth) before applying. Others also require observation of a licensed RDH for a minimum of 10 hours, including observation of scaling and root planing on a periodontally involved patient and a prophylaxis.
Because of high demand and limited seats, many applicants apply to multiple programs and spend one to two years completing prerequisites and building a competitive application before being admitted.
Step 2: Pass the Required Examinations
After graduating from an accredited dental hygiene program, you must pass several examinations before you can apply for your California RDH license.
National Board Dental Hygiene Examination (NBDHE)
The NBDHE is a comprehensive written examination administered by the Joint Commission on National Dental Examinations (JCNDE). It assesses your understanding of biomedical and dental hygiene sciences and your ability to apply that knowledge in clinical problem-solving contexts. Most students take this exam during their final year of dental hygiene school. You must submit an application to the JCNDE and verify that you meet the eligibility requirements before sitting for the exam.
Clinical Licensing Examination
California accepts clinical examination results from the following approved regional testing agencies:
- ADEX (American Board of Dental Examiners)
- CDCA-WREB-CITA (the unified clinical examination)
- CRDTS (Central Regional Dental Testing Service)
The clinical exam must have been completed within the last three years from the date you submit your licensure application. The exam tests your ability to perform clinical dental hygiene procedures on a live patient under controlled examination conditions.
California Law and Ethics Examination
Once your application for licensure is deemed complete by the DHBC, you will receive instructions to schedule the California RDH Law and Ethics examination. This is a computer-based test administered through PSI testing centers. It covers the California Dental Practice Act, the scope of practice for dental hygienists, and ethical principles specific to California law. All applicants—whether educated in California or out of state—must pass this exam.
Step 3: Complete Required Additional Coursework
California requires that all RDH applicants have completed approved courses in the following three areas:
- Local Anesthesia administration
- Soft Tissue Curettage
- Nitrous Oxide–Oxygen Analgesia
Most accredited California dental hygiene programs include these courses within their standard curriculum. However, if you graduated from an out-of-state program that did not include these subjects, you must complete them through an approved provider before applying for California licensure. The DHBC requires out-of-state applicants to provide certification that their program’s coursework in these areas is equivalent to California’s requirements.
Step 4: Apply for Your California RDH License
With your education completed and examinations passed, you are ready to submit your application to the Dental Hygiene Board of California. The application process includes the following:
- Completed Application for RDH Licensure with all required documentation
- Official transcripts from your accredited dental hygiene program
- Proof of passing the NBDHE, an approved clinical examination, and the California Law and Ethics exam
- Proof of completion of courses in local anesthesia, soft tissue curettage, and nitrous oxide
- Fingerprint-based criminal background check through both the FBI and the California Department of Justice
- Payment of all applicable application and licensing fees
- A U.S. Social Security Number or Federal Employment Identification Number
Processing Time: A license cannot be issued until the DHBC has received and reviewed criminal background information from both the FBI and the California DOJ. This process can take significantly longer if a criminal history exists. Applicants with prior convictions involving sex crimes, drug offenses (including DUI), or crimes of violence should be aware that these may affect licensure eligibility.
Pathways for Out-of-State and Internationally Trained Applicants
Licensure by Credential (Out-of-State RDHs)
California offers a licensure-by-credential pathway for dental hygienists already licensed in another state. To qualify, applicants generally must meet one of the following criteria:
- Graduated from a California-accredited dental hygiene program on or after January 1, 2024, and applying within 3 years of graduation
- Passed an approved clinical examination (WREB, ADEX, or CRDTS) within the last three years
- Licensed as an RDH for a minimum of five continuous years immediately preceding the application, with at least 750 clinical practice hours per year
- Full-time faculty member in an accredited dental hygiene program with at least 750 clinical practice hours per year
Out-of-state applicants must also provide certification that their dental hygiene education included coursework in local anesthesia, soft tissue curettage, and nitrous oxide equivalent to California’s requirements, and they must pass the California Law and Ethics examination.
AB 1952: A Proposed Pathway for Internationally Trained Dentists
Assembly Bill 1952, introduced in 2025 and sponsored by the California Dental Association, proposes a new pathway for internationally trained dentists (ITDs) to become licensed as RDHs in California without completing a CODA-accredited dental hygiene program. Under the proposed legislation, applicants would need to have their international dental degree validated as equivalent to a U.S. dental degree through Educational Credential Evaluators, pass national board and clinical examinations, complete more than 50 hours of California-specific coursework, and pass the California Law and Ethics examination.
The bill has generated significant debate within the profession. Supporters, including the CDA, argue it would help address California’s persistent dental workforce shortage—the state has more than 570 federally designated Dental Health Professional Shortage Areas. Opponents, including the California Dental Hygienists’ Association, argue the bill could undermine the integrity of dental hygiene education and licensure standards, since dental education abroad differs in curriculum and focus from U.S. dental hygiene programs. This legislation is still under consideration and has not yet been signed into law.
Scope of Practice for California RDHs
California offers one of the broadest scopes of practice for dental hygienists in the country. The duties and responsibilities that RDHs may perform are defined in Sections 1907 through 1915 of the California Business and Professions Code. Under the supervision of a licensed dentist, California RDHs may perform a wide range of services, including:
- Oral health assessments and patient screenings
- Dental radiography (x-rays)
- Oral prophylaxis (dental cleanings)
- Non-surgical periodontal therapy, including scaling, root planing, and soft tissue curettage
- Administration of local anesthesia
- Administration of nitrous oxide–oxygen analgesia for pain control
- Application of preventive agents such as fluoride and dental sealants
- Patient education on oral hygiene, nutrition, and the connection between oral and systemic health
It is important to note that laws and regulations define both the duties each licensure category is allowed to perform and the level of dentist supervision required. Performing functions outside the scope of practice is a criminal offense and grounds for license discipline for both the person performing the function and anyone who aids or abets such activity.
Salary and Job Outlook
California Salary Data
California dental hygienists consistently earn among the highest salaries in the nation. Based on the most recent data from the Bureau of Labor Statistics and industry surveys:
| Metric | Amount |
| California Average Annual Salary | $102,970 – $124,370 |
| California Average Hourly Wage | ~$53.65/hr |
| National Median Annual Salary (2024) | $94,260 |
| Bay Area Average Hourly Wage | ~$69/hr |
| Los Angeles Metro Average | ~$95,730 |
| Top Earners (90th Percentile, CA) | $130,000+ |
Salaries vary significantly by region, experience, practice setting, and employment arrangement. Urban areas and the Bay Area tend to pay more but also have higher costs of living. Many dental hygienists work part-time schedules, and some work for multiple practices to maximize income and flexibility.
Job Outlook
The employment outlook for dental hygienists is strong. According to the Bureau of Labor Statistics, employment is projected to grow approximately 7 percent between 2024 and 2034, faster than the average for all occupations, with an estimated 15,300 job openings nationally each year over the decade. In California specifically, demand is driven by population growth, increased awareness of the importance of preventive oral care, an aging population retaining more natural teeth, and a wave of retirements among experienced hygienists. Multiple regions in the state continue to report unfilled hygiene positions, reduced appointment availability, and delayed preventive care.
Maintaining Your California RDH License
License Renewal
California RDH licenses must be renewed every two years. The renewal deadline is the last day of the month of your birthday. The DHBC strongly encourages online renewal through the BreEZe system, where you can renew in real time using a credit card. Hard copy renewals are available on request but may take 4 to 6 weeks to process.
First Renewal: No continuing education (CE) units are required for your first renewal period.
Continuing Education Requirements
After the first renewal, RDHs must complete 25 CE units during each two-year renewal period. Key rules include:
- No more than 50% of CE units (12.5 units) may be taken as correspondence or self-study courses
- No more than 20% of CE units may be for practice management or business-related topics
- A maximum of 8 CE units may be claimed in a single day
- All CE must be completed through providers approved by the Dental Board of California, ADA CERP, or AGD PACE
Mandatory CE courses that must be completed every renewal period include:
- California Dental Practice Act (2 hours, board-approved)
- Infection Control (2 hours, board-approved)
- Basic Life Support / BLS / CPR (must include a live, in-person skills component; AHA or Red Cross accepted)
Failure to complete the required CE units will prevent license renewal, and practicing with an expired, canceled, or inactive license is a criminal offense.
Career Advancement Pathways
California offers several paths for dental hygienists looking to advance their careers beyond clinical practice.
Registered Dental Hygienist in Alternative Practice (RDHAP)
The RDHAP license allows dental hygienists to practice with greater autonomy, including in settings such as schools, residential care facilities, and patients’ homes, without the direct supervision of a dentist in most circumstances. To qualify, you must hold a current RDH license, complete an approved RDHAP program, have a bachelor’s degree (or equivalent of 120 semester credits), and have completed at least 2,000 clinical practice hours in the 36 months preceding the application. RDHAPs may also apply for a Fictitious Name Permit (FNP) to establish and operate their own practice.
Degree Completion and Graduate Education
Several California institutions now offer bachelor’s degree completion programs (AS-to-BSDH bridge programs) for licensed RDHs who hold an associate degree. These programs, often available online, focus on research, public health, leadership, and communication skills. Completing a bachelor’s degree opens career opportunities in dental hygiene education, corporate and industry roles, research, and public health agencies. Master’s degree programs in dental hygiene are also available for those seeking careers in education, administration, or advanced research.
Other Career Paths
Beyond traditional clinical practice, dental hygienists find fulfilling careers in dental hygiene education (teaching in accredited programs), dental product sales and corporate education, public health departments and community health centers, research roles, dental practice management, and the dental insurance and benefits industry. The versatility of a dental hygiene license, combined with additional education, provides remarkable career flexibility.
Quick Reference: Your Licensure Checklist
- Complete prerequisite coursework (sciences, general education)
- Apply to and graduate from a CODA-accredited, DHBC-approved dental hygiene program
- Ensure your program includes courses in local anesthesia, soft tissue curettage, and nitrous oxide (or complete these separately)
- Pass the National Board Dental Hygiene Examination (NBDHE)
- Pass an approved clinical licensing examination (ADEX, CDCA-WREB-CITA, or CRDTS) within 3 years of application
- Submit your complete application to the Dental Hygiene Board of California
- Complete fingerprint-based background check (FBI and CA DOJ)
- Pass the California RDH Law and Ethics examination
- Receive your RDH license and begin practicing
- Renew every 2 years with 25 CE units (after first renewal period)
Resources
- Dental Hygiene Board of California (DHBC) — www.dhbc.ca.gov
- DHBC Licensure Information — www.dhbc.ca.gov/applicants/index.shtml
- DHBC Continuing Education Requirements — www.dhbc.ca.gov/licensees/cont_ed.shtml
- CODA Program Finder — coda.ada.org/find-a-program
- California Dental Hygienists’ Association (CDHA) — cdha.org
- American Dental Hygienists’ Association (ADHA) — www.adha.org
- Joint Commission on National Dental Examinations — jcnde.ada.org
- BLS Occupational Outlook: Dental Hygienists — www.bls.gov/ooh/healthcare/dental-hygienists.htm
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Disclaimer: This article is intended for informational purposes only and does not constitute legal or professional advice. Licensure requirements are subject to change. Always verify current requirements directly with the Dental Hygiene Board of California (www.dhbc.ca.gov) before making decisions about your education or career.