Question

All of the following are the uses of EDTA, except:

• A. Dissolution of pulp
• B. Softening of dentin
• C. Removal of smear layer
• D. Chelation of calcium ions

Hint:

EDTA is primarily used in dentistry to clean and shape the root canal and remove the smear layer, not to dissolve pulp tissue.

Answer 1

The Correct Option is A

EDTA (ethylenediaminetetraacetic acid) is a chelating agent that can bind to metal ions, and it is used in various fields such as medicine, dentistry, and laboratory research. The uses of EDTA include: 
1. Softening of dentin: EDTA is commonly used in endodontics to soften dentin for easier cleaning and shaping of the root canal. 
2. Removal of smear layer: EDTA helps in the removal of the smear layer formed during instrumentation of the root canal. 
3. Chelation of calcium ions: EDTA works by chelating calcium ions, which are essential in the formation of dentin and the smear layer. 
However, EDTA does not dissolve the pulp itself. Therefore, the answer is Dissolution of pulp.