Odontoprep is a lubricant for endodontic files and was designed to be used in conjunction with Odontopaste. It is formulated in such a way that it adds only one additional ingredient to the root canal hence ensuring that there is no interference of Odontoprep with Odontopaste or Odontocide. Odontoprep has been tested with Odontopaste to ensure that the materials are compatible. Odontoprep contains mandelic acid and EDTA in a water soluble gel. Odontoprep is also clear so vision, particularly with microscopes, is not impaired.