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.

The Admission Test for Dental Hygiene is administered to understand the skill levels of applicants.
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Prepare for the ATDH

Review the provided guide, practice test and quick facts before taking the test. After reading all the materials, apply and schedule your appointment.

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. 
Apply for the ATDH

Ready to start? Be sure to review the prep materials and read the ATDH guide before submitting your application.

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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.

ATDH Updates and Presentation


Download information from the March 2023 ADEA Section on Dental Hygiene Education


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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