Preparation is intended for use during chemo-mechanical root canal rinsing and preparation. Surfacants contained in the product make introduction of the tool into the root canal easier and minimize danger of its impaction or breakage in the root canal. Activity of the disodium edetate is based on reaction between EDTA and mineral components of the tooth’s hard tissues. By absorption of calcium from the root canal, disodium edetate softens tissue and makes mechanical drainage of the root canal easier