National Dental Assisting Examining Board (NDAEB) Practice Exam

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Prepare for the National Dental Assisting Exam with comprehensive quiz questions, including multiple choice and detailed explanations. Equip yourself for success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the primary function of a dental liner?

Protects the tooth from thermal shock
Prevents tooth decay
Protects the pulpal tissue from irritation
Enhances aesthetic appearance

The correct answer is: Protects the pulpal tissue from irritation

The primary function of a dental liner is to protect the pulpal tissue from irritation. Dental liners are used in restorative dentistry primarily when a cavity preparation is close to the dental pulp. They serve as a barrier that can reduce the sensitivity of pulp tissue to chemicals, temperature changes, and other irritants during and after the placement of restorative materials. By providing this protective layer, dental liners help to minimize the risk of pulpal inflammation or damage, contributing to long-term tooth health and comfort for the patient. The composition of liners can also promote healing and dentin regeneration, further assisting in preserving pulp vitality. While protecting against thermal shock, preventing tooth decay, and aesthetic enhancement are important aspects of dental materials and techniques, the core role of a dental liner distinctly focuses on safeguarding the dental pulp from potential harms during restorative procedures.