Admission Test for Dental Hygiene (ATDH)
The ATDH is an admission test for anyone interested in pursuing a career in dental hygiene. The ATDH should be taken before entering a dental hygiene education program in the United States.
About ATDH
The Admission Test for Dental Hygiene is a nationally administered standardized admission test for individuals applying to dental hygiene programs. It is administered to understand the skill levels of applicants and used to assist with admissions decisions. Find additional information about the test in the ATDH Candidate Guide.
Recent and Forthcoming Updates
Please download and check Recent and Forthcoming Updates to Examinations and Tests (PDF) often as you prepare for your examination.
ATDH Available Year-Round
Effective on September 1, 2023, the ADA’s Department of Testing Services (DTS) implemented year-round testing for the ATDH Program. This change will provide candidates and dental hygiene programs with additional flexibility. Under year-round testing, a candidate will be permitted to attempt the ATDH on any day of the year for which they can secure a testing appointment, provided they meet established ATDH eligibility criteria. Download the Notification of year-round testing (PDF) for more information.
Available ATDH Resources
Review the provided guide, practice test and quick facts to help you prepare for the ATDH. When you're ready, apply for the test and schedule your appointment.
ATDH Resources
Find everything you need to know about taking the test before you apply.
Review the types of questions and question format used for the test.
Read for guidance on using the ATDH to inform admission decisions.
Learn more about the purpose, eligibility and cost of the test.
Candidates can review and find answers to frequently asked questions about the ATDH.
If you have applied to test (or taken a test), retrieve your existing DENTPIN.
Program Locations
College of Dupage - IL
Community College of Denver - CO
Des Moines Area Community College - IA
Dallas College, El Centro Campus - TX
Florence-Darlington Technical College - SC
Hocking College - OH
Johnson County Community College - KS
Manor College - PA
Ozarks Technical Community College - MO
San Juan College - NM
Seattle Central College - WA
Tennessee State University - TN
Tennessee Wesleyan University - TN
Texas State Technical College at Harlingen - TX
Tunxis Community College-Allied Health - CT
University of Louisiana at Monroe - LA
University of Nebraska Medical Center College of Dentistry - NE
University of Tennessee College of Dentistry - TN
Pierce College - WA
Louisiana State University - LA
Wake Technical Community College - NC
Lane Community College - OR
Apply for the ATDH
Ready to start? Be sure to review the prep materials and read the ATDH guide before submitting your application.
Get my scores
See your ATDH score report, review scoring FAQs or request an audit.
ATDH Webinar
The Admission Test for Dental Hygiene (ATDH): A Valid, Reliable, and Fair Examination Built Specifically for Dental Hygiene
On April 18, 2023, DTS staff and members of the Council on Dental Education and Licensure (CDEL) presented an informative webinar on the Admission Test for Dental Hygiene (ATDH).
This webinar provided important information concerning the fast-growing ATDH, its validity, reliability, and fairness, and how dental hygiene programs can take advantage of this important new tool for use in admission procedures.
On April 18, 2023, DTS staff and members of the Council on Dental Education and Licensure (CDEL) presented an informative webinar on the Admission Test for Dental Hygiene (ATDH).
This webinar provided important information concerning the fast-growing ATDH, its validity, reliability, and fairness, and how dental hygiene programs can take advantage of this important new tool for use in admission procedures.
Additional ATDH information
Examinee Information Report
The ATDH was first administered in September 2021. The information provided in this report reflects the most recent data collected. The Examinee Information Report (PDF) contains:
- information about examinees’ self-reported gender
- ethnicity
- whether they spoke English as a first language
- state of residence
- science and math-related courses taken in high school and college
- completed college courses, years of college completed, review courses taken and
- anticipated enrollment year for their dental hygiene program
Updates
Download information from the March 2023 ADEA Section on Dental Hygiene Education
Presentation
Presented on June 5, 2022 at the ADEA Allied Dental Program Directors' Conference
Topics include purpose and governance, standards for development, content areas and test specifications, administration, test security, scoring, and reporting, validity evidence, Program participation, and more.
ATDH Program Director Webinar
Presented on March 31, 2021
Speakers at the webinar were Paul R. Leary, DMD, Chair, Admission Test for Dental Hygiene Steering Committee, and David M. Waldschmidt, Ph.D., Director, Testing Services. This webinar was written for Dental Hygiene Program Directors and includes the following topics:
- ATDH purpose and Governance
- ATDH Development and Validity Evidence
- Examination Content
- ATDH Administration
- ATDH Scoring and Score Reporting
ATDH Candidate Webinar
Presented on August 25, 2021
The August webinar was designed for candidates who will be taking the ATDH, with the goal of helping such candidates prepare for the examination. It includes the following topics:
- Introduction to the ATDH Candidate Guide
- Topics covered by the examination
- ATDH practice questions
- Administration schedule and procedures
- Partial fee waiver
- Q & A
Speakers were able to answer a portion of the many questions that arose during the webinar. Download FAQs for ATDH Candidates (PDF) for additional answers to questions from the webinar.
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