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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What is the critical pH level for dentin?

The correct answer is: 6.2

Dentin is a calcified tissue that makes up the bulk of the tooth and it is highly sensitive to changes in pH. The critical pH level for dentin is 6.2, which is slightly acidic but closer to neutral compared to the other options. A pH level of 5.5 (option A) can start to demineralize dentin which can cause tooth decay. A pH level of 7.0 (option C) is neutral and will not significantly impact dentin. A pH level of 4.5 (option D) is more acidic and can cause further damage to the tooth structure. Overall, maintaining a slightly acidic pH level close to neutral is important for preserving dentin and preventing tooth decay.