Dental Assistant Practice Exam

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Prepare for the Dental Assistant Exam with comprehensive quizzes and valuable study resources. Each quiz includes multiple-choice questions designed to familiarize you with exam content and structure. Elevate your readiness for the dental assistant examination!

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What is the purpose of Acid Etch in dentistry?

To sterilize instruments
To prepare surfaces for bonding
To clean teeth
To desensitize dentin

The correct answer is: To prepare surfaces for bonding

Acid etch is primarily used in dentistry to prepare surfaces for bonding. This process involves applying a weak acidic solution, commonly phosphoric acid, to the enamel or dentin surface. The acid removes a small amount of material, creating a rougher texture that enhances the surface area for adhesion. This micromechanical retention is crucial for the effectiveness of dental adhesives and composites, ensuring a strong bond between the tooth structure and restorative materials. While sterilizing instruments, cleaning teeth, and desensitizing dentin are important dental procedures, they do not relate to the specific function of acid etch. Sterilization is accomplished through heat or chemical means, cleaning teeth is typically performed with ultrasonic scalers and prophylaxis pastes, and desensitization of dentin involves different agents designed to block nerve signals or seal tubules. The unique role of acid etch focuses solely on creating optimal conditions for bonding in restorative dentistry.