How do liners function as obtundents during dental treatment?

Liners function as obtundents during dental treatment primarily by helping to soothe sensitive pulp. When a dental procedure is performed, it often involves the removal of decayed tissue, which can lead to irritation or sensitivity in the dental pulp. Liners contain materials that have properties to reduce this irritation, which can help minimize pain and discomfort during and after the procedure.

These materials create a protective barrier between the pulp and any restoration material or dental procedure taking place, thereby allowing the pulp to remain healthy while the restoration is placed. This soothing effect is essential, especially in cases where the pulp is near exposure or has already been irritated by decay or dental procedures.

The role of liners is not to block all nerve signals or serve as a permanent seal. Instead, they are specifically designed to provide temporary relief and protection to the pulp while allowing for subsequent treatment steps to occur. Thus, their ability to soothe sensitive pulp is what distinguishes their function as obtundents in dental practice.