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About this exam

The Central Regional Dental Testing Service (CRDTS) administers clinical licensing examinations for dentists and dental hygienists. For over 50 years, CRDTS has been a mainstay in national clinical testing as a pathway toward licensure, and its examinations are recognized and accepted in over 40 states nationwide (and growing). CRDTS develops and administers fair and reliable examinations for candidates wishing to practice dental and dental hygiene. The dental examination assesses clinical competency through patient-based and simulated patient (manikin) formats, and a written Oral Assessment OSCE is presented to candidates on-site. Same day exam results and on-site retakes are available at the majority of exam locations, and independent testing sites offer scheduling flexibility. CRDTS also offers examinations in local anesthesia, restorative auxiliary, and dental therapy. Candidates should prepare by reviewing the candidate manual for their specific examination, practicing clinical procedures under timed conditions, and familiarizing themselves with the OSCE format. Because acceptance varies by state, candidates must confirm with the state dental board whether CRDTS is accepted for initial licensure and/or through credentialing. This page is an independent study resource and is not affiliated with CRDTS.

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Common questions

About CRDTS Dental preparation

What is the CRDTS Dental Examination?

It is a clinical licensing examination administered by Central Regional Dental Testing Service for candidates seeking dental licensure. It assesses clinical competency through patient-based and simulated patient (manikin) formats, plus a written Oral Assessment OSCE presented on-site. CRDTS examinations are recognized and accepted in over 40 states nationwide.

What does the exam cover?

The dental examination covers clinical competency using patient-based and simulated patient (manikin) assessment. A written Oral Assessment OSCE is also presented to candidates on-site. Specific clinical procedures and OSCE content are detailed in the candidate manual, which candidates should review carefully before test day.

How is the exam formatted?

The dental examination includes a clinical (patient-based) examination and a simulated patient (manikin) examination option. A written Oral Assessment OSCE is presented to candidates on-site for both dental and dental hygiene exams. Independent Testing Sites are also available for candidates to sit for an exam with the freedom to test when their schedule allows.

Are same-day results and retakes available?

Yes. Same day exam results and on-site retakes are available at the majority of CRDTS exam locations. Candidates should confirm the specific policies at their chosen testing site, as availability may vary by location.

How difficult is the CRDTS Dental Examination?

The exam is designed to assess clinical competency for licensure, so it requires solid hands-on skills and thorough preparation. CRDTS develops and administers fair and reliable examinations. Difficulty is best judged by reviewing the candidate manual and practicing under exam-like conditions; no official pass rate is provided on the CRDTS website.

How should I prepare for the exam?

Start by reading the candidate manual for your specific examination. Practice clinical procedures under timed conditions, review infection control and patient management, and familiarize yourself with the OSCE format. Consider simulated patient (manikin) practice if you are taking that option. Independent study resources like this page can supplement your preparation.

What are common failure modes?

Common issues include inadequate preparation for the OSCE, poor time management during clinical procedures, and unfamiliarity with the candidate manual's protocols. Since same day retakes are available at most locations, candidates should review their performance immediately and be ready to retake if needed.

Is CRDTS accepted in my state?

CRDTS is accepted across the United States, but it is the candidate's responsibility to know whether a specific state accepts CRDTS for initial licensure and/or through credentialing. Check the CRDTS Portability Map and your state dental board's website for confirmation.

What other examinations does CRDTS offer?

CRDTS offers examinations in Dental, Dental Hygiene, Local Anesthesia, Restorative Auxiliary, and Dental Therapy. Special programs include CRDTS + SRTA and remediation and re-education options. Each examination has its own candidate manual and requirements.