The Use of Alum as Astringent in Dentistry

What type of astringent can be applied to a retraction cord to control bleeding?

Final answer: Alum as astringent

Answer:

Alum, specifically Potassium Sulfate and Aluminum Sulfate, is the type of astringent that can be applied to a retraction cord to control bleeding.

Alum is a common astringent used in dentistry to help control bleeding during dental procedures, particularly when using a retraction cord. This astringent is effective in causing proteins in the affected tissue to cross-link, leading to shrinkage and dryness in the area.

When a retraction cord soaked with Alum is placed gently into the sulcus around a tooth, it exerts gentle pressure to push the gums away from the tooth while simultaneously helping to control any bleeding that may occur. After a few minutes, the retraction cord is removed, leaving a clear and dry access point to the tooth and its surrounding structures.

The use of Alum as an astringent in dentistry has been proven to be effective in maintaining a clean and blood-free area for dental procedures, allowing for better visibility and precision during treatment.