title: Tannic acid for smear layer removal: pilot study with scanning electron microscope.
abstract: The effects of a 25% tannic acid solution applied to the surface of prepared dentin was compared with untreated prepared dentin surfaces. The following results were demonstrated by electron microscope observation: (1) cavity preparations created an amorphous dentinal smear layer, (2) placement of a 25% tannic acid solution for 15 seconds removed the smear layer, (3) the contents of the dentinal tubules were not removed and no enlargement of dentinal tubules was found, and (3) a clean dentinal surface was observed.
authors.affiliation: Department of Restorative Dentistry, University of Southern California, School of Dentistry, Los Angeles.
authors.forename: N C
authors.initials: NC
authors.lastname: Bitter
mesh_terms: D003737:Dental Cavity Preparation / Q000379:methods; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure*; D006801:Humans; D047348:Hydrolyzable Tannins / Q000008:administration & dosage / Q000627:therapeutic use*; D008855:Microscopy, Electron, Scanning; D010865:Pilot Projects; D013634:Tannins / Q000627:therapeutic use*
chemical_list: D047348:Hydrolyzable Tannins; D013634:Tannins