The ADEX Dental Hygiene Examination is based on specific performance criteria used to measure clinical competence. There are two skill-specific clinical and simulated clinical examinations:

ADEX DH Elements


The Simulated Patient Treatment Clinical Examination (SPTCE) and Patient Treatment Clinical Examination (PTCE) – evaluate candidates on their clinical and judgment skills. Clinical skills include detection and removal of calculus, accurate periodontal pocket depth measurements, and tissue management.

The Computer Simulated Clinical Examination (CSCE) OSCE – is designed to assess various levels of diagnosis and treatment planning knowledge, skills, and abilities. Clinically-based questions are utilized through computer-enhanced photographs, radiographs, optical images of study and working models, laboratory data, and other clinical digitized reproductions.

Only students or graduates of schools accredited by the Commission on Dental Accreditation (CODA) or the Commission on Dental Accreditation of Canada may take the ADEX Dental Hygiene Examination. All other candidates (including international graduates) must apply through the state dental board in the state or jurisdiction where they wish to practice for permission to take an examination for licensure only in that state or jurisdiction.

2024 Candidate Manuals & Forms

Dental Hygiene Exam Calendar

The calendar below lists all possible Dental Hygiene examination sites. Click here to log into your candidate profile to register.

To avoid any additional fees we suggest making your account at least one week prior to the registration deadline.

Any request to change your exam site or to be added to an exam after the exam registration deadline needs to be submitted via Contact Us and will incur a $100 material procurement fee.

Scheduling requests must be submitted through contact us before the registration deadline. While scheduling requests are not always granted, we try our best to accommodate you.

Note: Outside candidates are only allowed in exams that say “Outside Candidates Accepted”

How do I Register for this Exam?

Please review the exam registration process on how to create a profile and register for this exam.