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DHA Orthodontic Assistant (DHA-OA) Practice Tests & Test Prep - Topics


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  • Real Exam Simulation: Timed questions and matching content build comfort for your DHA Orthodontic Assistant test day.
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  • Clear Explanations: Step-by-step answers and explanations for your DHA exam to strengthen understanding.
  • Boosted Confidence: Reduces anxiety and improves test-taking skills to ace your DHA Orthodontic Assistant (DHA-OA).

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Understanding the exact breakdown of the DHA Orthodontic Assistant test will help you know what to expect and how to most effectively prepare. The DHA Orthodontic Assistant has multiple-choice questions The exam will be broken down into the sections below:

DHA Orthodontic Assistant Exam Blueprint
Domain Name % Number of
Questions
ICE - Infection Control
     Patient and dental healthcare worker education 10% 5
     Prevent cross-contamination and disease transmission 20% 10
     Maintain aseptic conditions 10% 5
     Perform sterilization procedures 15% 7
     Environmental asepsis 15% 7
     Occupational safety 30% 14
OA - Orthodontic Assisting
     Collection And Recording Of Clinical Data 15% 7
     Orthodontic Procedures 36% 17
     Chairside Dental Materials 37% 18
     Laboratory Materials And Procedures 5% 2
     Oral Health Management Prevention And Management Of Emergencies 5% 2
     Office Operations 5% 2
     Radiation Health And Safety 5% 2