The Dental Admission Test (DAT) is a standardized admissions examination required for admission to dental schools in the United States and Canada. The DAT is administered by the American Dental Association (ADA) and measures academic ability, scientific understanding, and perceptual ability — skills that dental school admissions committees use to evaluate readiness for dental school. The DAT is offered year-round at Prometric testing centers, with a 90-day waiting period required between retakes.
The DAT consists of four sections completed in a single sitting over approximately 4 hours and 15 minutes of testing time: Survey of Natural Sciences (90 minutes, 100 questions) — the largest and most content-intensive section, covering Biology (40 questions), General Chemistry (30 questions), and Organic Chemistry (30 questions); Perceptual Ability Test or PAT (60 minutes, 90 questions) — tests spatial visualization using six subsection types: keyholes, top-front-end views, angle ranking, hole punching, cube counting, and pattern folding; Reading Comprehension (60 minutes, 50 questions) — three scientific passages with 50 questions testing close reading of complex scientific text; and Quantitative Reasoning (45 minutes, 40 questions) — mathematical reasoning covering algebra, numerical calculations, probability, statistics, and applied mathematics. Candidates also complete a 15-minute tutorial and a 15-minute survey, for a total testing center experience of approximately 5 hours.
Each DAT section is scored on a scale of 1 to 30, with 17 representing the national average for each section. The Academic Average (AA) is the average of the Reading Comprehension, Quantitative Reasoning, Biology, General Chemistry, Organic Chemistry, and Perceptual Ability scores. The Total Science (TS) score averages Biology, General Chemistry, and Organic Chemistry. Dental school admissions primarily look at the AA and TS scores, though section-level scores are also reviewed.
DAT score competitiveness depends on the programs you are applying to and your overall application strength. Understanding target scores before beginning preparation allows you to set a goal and benchmark your progress with practice exams.
Average DAT scores for accepted dental school applicants — based on ADEA data for ADEA AADSAS applicants — are approximately: Highly competitive programs (top 10 dental schools): Academic Average of 22 to 24+; Average competitive applicant across all U.S. dental schools: Academic Average of 19 to 21; Minimum competitive threshold (below which most applications are screened out): Academic Average of approximately 17 to 18. Most successful applicants target a DAT Academic Average of 20 or higher. An AA of 22+ significantly strengthens the application. A score below 18 AA may make admission difficult at most accredited programs — retaking is advisable for candidates who score below 18.
In addition to the AA, individual section scores matter — a very low score in one section (particularly Biology or PAT) can raise concerns even if the overall AA is competitive. Aim for no section score below 17 to 18. Some competitive programs specifically screen for PAT scores (spatial ability is directly relevant to clinical dentistry) — a PAT score above 20 is a notable strength.
DAT preparation resources vary significantly in quality and exam alignment. The most effective preparation combines a comprehensive content review platform with ample practice testing from reputable sources.
DAT Bootcamp is the most widely used and highly regarded third-party DAT preparation platform. It offers: full-length practice DATs that closely mirror the actual exam; section-specific practice for all DAT subsections including detailed PAT practice with angle ranking, hole punching, and pattern folding; Biology, General Chemistry, and Organic Chemistry content videos and question banks; detailed answer explanations for every question; and performance analytics by content area. DAT Bootcamp subscriptions typically cost $150 to $350 for 3 to 6 months of access. The DAT community consistently reports that DAT Bootcamp scores correlate well with actual exam performance — a strong Bootcamp practice score is a reliable readiness indicator.
Chad's Videos (now part of DAT Bootcamp) provide free and paid video content covering General Chemistry and Organic Chemistry at a level appropriate for the DAT — clear explanations of mechanisms, reactions, and concepts without excess detail. Chad's content is particularly valuable for candidates who need to build their chemistry understanding from a conceptual level. Khan Academy supplements chemistry content for candidates who need more foundational instruction.
Feralis Biology Notes is a widely used free resource — a condensed but comprehensive biology review document covering all DAT Biology content areas. The notes are available free in DAT prep communities. Many DAT candidates use Feralis Biology Notes as their primary biology content review, supplementing with full video content from DAT Bootcamp or Kaplan only for topics where the condensed notes aren't sufficient.
The ADA offers official DAT practice tests available at ada.org — these are the most accurate representation of the actual exam and should be used as final-preparation benchmarks. Do not use official practice tests as your first diagnostic, as you will have limited practice tests available — save them for the final weeks of preparation when you want an accurate readiness assessment.
Each DAT section requires a different approach. Understanding what makes each section challenging — and how to prepare specifically for it — is more efficient than generic studying.
Biology (40 questions) is the largest subsection and covers a broad range of topics: cell biology (cell membrane, organelles, cell cycle, mitosis, meiosis, protein synthesis), genetics (Mendelian genetics, molecular genetics, DNA replication), evolution, taxonomy, anatomy and physiology of major systems (digestive, circulatory, respiratory, nervous, endocrine, reproductive), animal behavior, and ecology. A systematic approach: use Feralis Biology Notes for content review; use DAT Bootcamp biology practice passages to assess retention; and create topic-by-topic flashcards for definitions and processes that require memorization (e.g., Krebs cycle steps, meiosis stages, phylogenetic classifications).
General Chemistry and Organic Chemistry together account for 60 of the 100 Survey of Natural Sciences questions. For General Chemistry: focus on stoichiometry, acid-base chemistry (Henderson-Hasselbalch equation, buffer calculations, acid-base titration), thermodynamics (Gibbs free energy, Hess's law), electrochemistry (galvanic cells, electrolysis), and gas laws. For Organic Chemistry: focus on reaction mechanisms (SN1/SN2/E1/E2 criteria), functional group identification and reactions, stereochemistry (R/S designation, enantiomers, diastereomers), and spectroscopy (NMR and IR basics for structure determination). The DAT tests chemistry conceptually — understand why reactions happen, not just what products form.
The PAT is unique to the DAT and unlike any college coursework. Most candidates need dedicated PAT practice regardless of academic strength. Key strategies: practice all six subsection types — angle ranking, hole punching, keyholes, top-front-end views, cube counting, and pattern folding — as each requires a different spatial reasoning skill; practice daily (even 20 to 30 minutes per day consistently builds spatial visualization better than infrequent intensive sessions); and use DAT Bootcamp's PAT generators which create unlimited novel practice items. Most candidates show significant PAT improvement with dedicated practice — it is a learnable skill.
The DAT Reading Comprehension section gives you three scientific passages and 50 questions in 60 minutes — approximately 20 minutes per passage. Strategy: read actively with purpose, annotating main ideas in each paragraph; answer all questions, referring back to the passage rather than relying on memory; the most important skill is finding information quickly in the passage — practice scanning to locate specific details; and search, don't recall — always return to the passage, as questions are designed to test whether you read carefully, not whether you remember content.
Most successful DAT candidates prepare for 3 to 6 months with consistent daily study. The appropriate timeline depends on your starting academic level in each subject area and your target score.
Step 1 (Week 1): Take a full-length diagnostic practice DAT (DAT Bootcamp or ADA practice) to assess your starting section scores and identify weakest areas. Don't study for this diagnostic — the baseline is more useful if it reflects your current knowledge level. Step 2 (Weeks 2 to 10): Systematic content review by section: Biology (Feralis Notes + DAT Bootcamp biology questions); General Chemistry (Chad's Videos + practice problems); Organic Chemistry (Chad's Videos + reaction mechanisms); PAT (daily practice, all 6 subsection types); Reading Comprehension (practice passages with search strategy). Spend the most time on your weakest areas from the diagnostic. Step 3 (Weeks 11 to 14): Full-length practice DATs every 4 to 5 days; review every missed question with detailed explanation; PAT generators daily; targeted review of persistently weak content areas. Step 4 (Weeks 15 to 16): One official ADA practice DAT; final weak area review; logistics preparation (testing center, documentation, exam day strategy).
A typical 4-hour daily study session during content review phase: 90 minutes — content review (rotating through biology, general chemistry, organic chemistry by week); 60 minutes — PAT practice (10 minutes per subsection type); 30 minutes — reading comprehension passage; 60 minutes — quantitative reasoning and content review practice questions. Adjust based on diagnostic results — a candidate scoring 24 in Quantitative Reasoning but 15 in Biology should allocate dramatically more biology time.