Dental Assistant Practice Exam

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Study for the Dental Assistant Exam. Prepare with flashcards and multiple choice questions. Each question includes hints and explanations to help you succeed. Get ready for your exam today!

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What is a significant characteristic of Zinc Oxide and Eugenol (Cavitec)?

It is a popular choice for filling cavities
It cannot be used under composite restorative material
It acts as a permanent restoration
It is exclusively used for gingival retraction

The correct answer is: It cannot be used under composite restorative material

Zinc Oxide and Eugenol (ZOE) is known for its significant characteristics in dental procedures, one of which is its interaction with other materials. In particular, the fact that ZOE cannot be used under composite restorative materials arises from the potential for an adverse reaction. The eugenol component can inhibit the polymerization process of many methacrylate-based composites, which could compromise the efficacy and durability of the composite restoration. Therefore, it is crucial to avoid using ZOE as a base or liner underneath composite materials to ensure the longevity and success of composite fillings. Understanding this interaction is essential for dental assistants to ensure appropriate material selection during restorative procedures.