The Admission Test for Dental Hygiene (ATDH) is a critical step for aspiring dental hygienists seeking entry into accredited programs. This standardized exam evaluates a candidate's readiness for rigorous coursework in dental hygiene schools. Our comprehensive guide covers everything from the ATDH exam structure to proven preparation strategies.
Successfully passing the Dental Hygiene Admissions Exam requires focused study and practice. Use our free ATDH practice test resources to familiarize yourself with the question types and boost your confidence before test day. Understanding the ATDH test format is key to achieving a competitive score.
Last verified: September 17, 2026 against the American Dental Association, Department of Testing Services (ADA.org/ATDH, 2026 ATDH Candidate Guide).
The Admission Test for Dental Hygiene serves as a national standard for evaluating applicants. High performance on the ATDH exam can significantly improve your chances of acceptance into top dental hygiene programs across North America. Practice with the free ATDH - Admission Test for Dental Hygiene practice test on PracticeTestGeeks (100+ questions with answer explanations).
If you are searching for a practice ATDH exam, start with the free questions on this page: every answer comes with an explanation, and the study notes below cover the ATDH exam topics in order.
Prepare for the ATDH - Admission Test for Dental Hygiene exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
Interactive ATDH - Admission Test for Dental Hygiene resources on PracticeTestGeeks, free to start:
Quick review for the Dental Hygiene Test
Use this comprehensive ATDH study guide to navigate the requirements of the Dental Hygiene Admissions Exam. Our guide breaks down essential information for success.
Focus heavily on the Perceptual Motor Ability section, as it is unique to dental exams. Practice with spatial reasoning puzzles daily to improve your speed and accuracy for the ATDH exam.
Estimated score calculation
Required to Pass: ~70% (Estimated)
Your Score: 105 correct ✓ PASS
Understanding your ATDH scores is vital for application success. Scores are reported on a scale of 200 to 500.
| Score Range | Interpretation | Competitiveness | Recommendation |
|---|---|---|---|
| 🏆 400-500 | Exceptional | Top 5% | Highly Competitive |
| ✅ 350-399 | Advanced | Top 25% | Strong Applicant |
| 👍 300-349 | Proficient | Average | Meets Requirements |
| ⚠️ 250-299 | Developing | Below Average | Consider Retake |
| ❌ 200-249 | Below Standard | Low | Retake Recommended |
Aim for a score of 350 or higher to stand out. Most top dental hygiene programs look for candidates who exceed the Admission Test for Dental Hygiene averages.
Plan to spend around $200-$350 total for the Admission Test for Dental Hygiene, including the exam fee and quality ATDH test prep materials.
Join thousands of students using our free ATDH exam prep resources.
Try these questions from our free ATDH - Admission Test for Dental Hygiene practice tests. The correct answer and an explanation follow each question.
Read the following sentence: 'Each of the dental hygiene students are required to bring their own set of instruments.' Which of the following revisions corrects the grammatical error in the sentence?
Answer: C. Each of the dental hygiene students is required to bring his or her own set of instruments.
The subject of the sentence is 'Each,' which is singular. Therefore, the verb must also be singular ('is required'). Additionally, the pronoun must agree with the singular subject; 'his or her' is the grammatically correct singular pronoun to use in this formal context. 'Their' is a plural pronoun.
Read this excerpt from a letter to a patient. Your improved cholesterol test results are __________, and we encourage you to maintain a healthy diet and daily exercise regimen to help you sustain those results! Which option completes the sentence while maintaining the style?
Answer: A. commendable
Explanation: "Commendable" is the most appropriate word choice for a letter to a patient because it conveys a sense of praise and approval for the improved cholesterol test results. It is a formal and respectful term that acknowledges the patient's efforts and achievements in maintaining their health.
A dental hygienist is analyzing the ages of patients who received a specific cosmetic procedure in one week. The ages recorded are: 28, 35, 26, 41, 28, 50, 28, 33. Which of the following values represents the mode of this data set?
Answer: A. 28
The mode is the value that appears most frequently in a data set. In the given list of ages (28, 35, 26, 41, 28, 50, 28, 33), the age '28' appears three times, which is more often than any other age.
Choose the word that correctly completes the following sentence: 'The dental hygienist gave the patient expert _______ on how to improve their brushing technique.'
Answer: B. advice
'Advice' is a noun meaning 'guidance or recommendations.' 'Advise' is a verb meaning 'to offer suggestions.' In this sentence, the hygienist is giving something (a noun) to the patient. Therefore, 'advice' is the correct choice.
Take the full ATDH - Admission Test for Dental Hygiene practice test