Diagnostic and surface preparation solution for RCT.
This alcohol mixture can be used as a final irrigant for total (passive) drying of the root canal.
The dentine surface is thereby rendered extremely dry, highlighting sites of exudate/seepage which may aid identification of canal perforations, defects, missed or lateral canals etc. Isthmus, fins and resorptive defects are better dried with an alcohol than by paper points or suction alone.
Many sealers are hydrophobic and therefore better suited to application over (surface) dry dentine rather than superficially moist dentine.
This alcohol mix is also used during cleaning of the pulp chamber and empty canal spaces after obturation, assisting removal of residual sealer & RCF excess which may otherwise contribute to staining and discolouration of the visible crown of an endodontically treated tooth.