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


Our free DHA Orthodontic Assistant (DHA-OA) Practice Test was created by experienced educators who designed them to align with the official Dubai Health Authority content guidelines. They were built to accurately mirror the real exam's structure, coverage of topics, difficulty, and types of questions.

Upon completing your free practice test, it will be instantly reviewed to give you an idea of your score and potential performance on the actual test. Carefully study your feedback to each question to assess whether your responses were correct or incorrect. This is an effective way to highlight your strengths and weaknesses across different content areas, guiding you on where to concentrate your study efforts for improvement on future tests. Our detailed explanations will provide the information you need to enhance your understanding of the exam content and help you build your knowledge base leading you to better test results.

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After you have completed your free test you will receive a special promo code that will save your between 10-15% on any additional practice tests!


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DHA Orthodontic Assistant - Free Test Sample Questions

The dental assistant has begun the disinfecting process. What is the universally accepted process?

Correct Answer:
spray-wipe-spray-wipe.


the universally accepted process for disinfecting surfaces in a dental clinic is the "spray-wipe-spray-wipe" method. this method ensures a thorough cleaning and disinfection of surfaces that might have been contaminated during dental procedures.

the initial step in this method involves spraying the cleaning solution liberally over the surface that needs to be disinfected. the purpose of this first spray is to cover the area with a disinfectant that will help in loosening and reducing the number of pathogens present.

following the initial spray, the assistant performs a thorough wipe of the area. this wiping action helps in physically removing the contaminants, such as blood, saliva, and other bodily fluids that may contain pathogens. the physical removal of these materials is crucial as it significantly reduces the microbial load on the surface.

after the initial wipe, the area is sprayed a second time with the disinfectant. this second application is critical as it covers any remaining pathogens that might not have been fully removed during the first wipe. at this stage, the disinfectant needs to remain on the surface for a specific duration, often recommended by the manufacturer, which is commonly around ten minutes. this duration allows the disinfectant to effectively kill any remaining microorganisms on the surface.

finally, the surface is wiped again after the recommended setting time. this final wipe not only removes any remaining traces of the disinfectant solution but also ensures that the surface is clean and ready for use without any residue that could potentially affect patients or dental procedures.

this "spray-wipe-spray-wipe" protocol is designed to maximize the effectiveness of the cleaning and disinfecting process, ensuring compliance with health standards and providing a safe environment for both dental professionals and patients.