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DANB's OA (OA) Practice Tests & Test Prep by Exam Edge - Exam Info



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The more you know about the DANB's OA exam the better prepared you will be! Our practice tests are designed to help you master both the subject matter and the art of test-taking to be sure you are fully prepared for your exam.

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DANB's Orthodontic Assisting - Additional Information

At ExamEdge.com, we focus on making our clients' career dreams come true by offering world-class practice tests designed to cover the same topics and content areas tested on the actual Dental Assisting National Board DANB's Orthodontic Assisting (OA) Certification Exam. Our comprehensive DANB's Orthodontic Assisting practice tests are designed to mimic the actual exam. You will gain an understanding of the types of questions and information you will encounter when you take your Dental Assisting National Board DANB's Orthodontic Assisting Certification Exam. Our DANB's Orthodontic Assisting Practice Tests allow you to review your answers and identify areas of improvement so you will be fully prepared for the upcoming exam and walk out of the test feeling confident in your results.

Because our practice tests are web-based, there is no software to install and no need to wait for a shipment to arrive to start studying. Your DANB's Orthodontic Assisting practice tests are available to you anytime from anywhere on any device, allowing you to study when it works best for you. There are 5 practice tests available, each with 100 questions and detailed explanations to help you study. Every exam is designed to cover all of the aspects of the DANB's OA exam, ensuring you have the knowledge you need to be successful!

DANB's Orthodontic Assisting - Additional Info Sample Questions

Which of the following is NOT one of the three areas of the tooth?

Correct Answer:
shaft.


the question asks which of the listed options is not one of the three main parts of a tooth. the correct answer is "shaft." this is because the anatomical structure of a tooth does not include a part called the shaft. instead, a tooth is divided into three primary areas: the crown, the neck, and the root.

the **crown** of the tooth is the part that is visible above the gum line. it is covered by enamel, which is the hardest substance in the human body, designed to protect the inner layers of the tooth from decay and damage. the shape of the crown varies depending on the function of the tooth (e.g., molars for grinding, incisors for cutting).

below the crown is the **neck** of the tooth, which is the area that transitions between the crown and the root. the neck is encircled by the gum line and is where the tooth and the gums meet. proper oral hygiene is important in this area to prevent gum disease, which can affect the stability of the teeth.

the **root** is the part of the tooth that extends into the bone of the jaw. it anchors the tooth securely in place. the root is surrounded by a layer of cementum, which helps attach the tooth to the surrounding bone and gums via the periodontal ligament. inside the root, the pulp canal houses nerve tissues and blood vessels, which provide nutrients and sensation to the tooth.

the term "shaft" does not apply to any part of a tooth; it is more commonly associated with other types of structures or mechanical parts, like the shaft of a hair or the shaft of a bone (the long middle part). thus, in the context of tooth anatomy, "shaft" is the correct answer as it is not a component of a tooth.