Near DEJ, tubules are

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Study for the Biocompatibility of Dental Materials Test. Prepare with multiple choice questions and detailed explanations to ensure you're ready for your exam!

Multiple Choice

Near DEJ, tubules are

Explanation:
In dentin, tubules run from the pulp toward the dentinoenamel junction, but their size changes across the thickness. As dentin forms outward, the tubule diameter decreases and the tubules become less dense toward the DEJ due to increased mineralization and the thickening of the surrounding peritubular dentin. So near the DEJ, the tubules are small in diameter. They are not absent, and they are not large or highly dense—that combination is more characteristic of dentin closer to the pulp.

In dentin, tubules run from the pulp toward the dentinoenamel junction, but their size changes across the thickness. As dentin forms outward, the tubule diameter decreases and the tubules become less dense toward the DEJ due to increased mineralization and the thickening of the surrounding peritubular dentin. So near the DEJ, the tubules are small in diameter. They are not absent, and they are not large or highly dense—that combination is more characteristic of dentin closer to the pulp.

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