INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

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Which type of dentin is much more resistant to acid-etching?

Sclerotic
Reparative
Primary
Secondary

The correct answer is: Sclerotic

Sclerotic dentin occurs when dentinal tubules have been mineralized and are blocked off, creating a network of hardened tubules. This makes it much more difficult for acid to etch into the dentin. Reparative dentin, which is formed in response to injury or decay, has a similar structure to primary dentin and therefore is not as resistant to acid-etching. Primary dentin is the initial layer formed during tooth development and is not as dense as sclerotic dentin. Secondary dentin is formed throughout the lifespan of a tooth and is also not as resistant to acid-etching as sclerotic dentin.