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

Partial removal of carious dentin is an accepted practice in certain clinical scenarios, particularly when aiming to preserve pulp vitality. The rationale behind this approach lies in the understanding that leaving a thin layer of carious dentin over the pulp can facilitate the formation of secondary dentin and can help protect the pulp from thermal and chemical irritants that might lead to pulp exposure.

When the restoration applied over this partial removal is well sealed, it provides a barrier that shields the remaining carious dentin and underlying pulp. A well-sealed restoration minimizes the risk of microleakage and subsequent bacterial invasion, which are critical factors in maintaining pulp health. This technique is especially useful in cases where complete removal may pose a higher risk of pulp exposure or where the carious lesion is close to the pulp.

In summary, partial carious dentin removal can be a valid and effective strategy when the subsequent restoration is adequately sealed, allowing for the preservation of tooth structure while also managing the risks associated with caries and its potential impact on the pulp.