Bitter N C
Department of Restorative Dentistry, University of Southern California, School of Dentistry, Los Angeles.
J Prosthet Dent. 1989 Apr;61(4):503-7. doi: 10.1016/0022-3913(89)90023-1.
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.
