Which of the following regarding partial caries removal and indirect pulp capping is true?

Partial removal of carious dentin is considered an acceptable practice when followed by a well-sealed restoration. This approach aims to preserve the vital pulp while managing deep caries. The rationale is that leaving some carious dentin can help maintain the health of the pulp by providing a barrier against bacterial infiltration, as long as the restorative material creates an effective seal to prevent recontamination.

In many clinical situations, inadequate removal of carious tissue can potentially reduce the risk of pulp exposure and offers a chance for pulp healing. This technique supports the philosophy of conservatively managing carious lesions in an effort to maintain tooth vitality. A well-sealed restoration plays a crucial role in this process; it protects the remaining dentin, minimizes the risk of bacterial reinfection, and supports the structural integrity of the tooth.

This understanding emphasizes the importance of balancing the risks and benefits in dental practice, making option D correct in the context of maintaining tooth vitality and ensuring a successful restorative outcome.