Dyschromia Treated with Oleozon E. T. Castañeira, O. Cruz, S. Menéndez(1). Elpidio Berovides Educational Polyclinic Center, Cuba. 1 - Ozone Research Center, Cuba. A preliminary study was performed with the aim of evaluating the OLEOZON action in the whitening of teeth, when by one reason or another they have lost their natural color,. The sample was of 30 patients, 15 patients treated with OLEOZON and 15 patients treated with the conventional method (sodium perborate and acetone). In this study the vital teeth with dyschromia were excluded, we only treated the not vital ones or those teeth submitted to a removal of pulp. The withening of teeth was reached from the fifth visit on using OLEOZON. The control group had a similar behavior, so we can state that OLEOZON substitutes sodium perborate and acetone in the treatment of dyschromia with satisfactory results. Source: 2nd International Symposium on Ozone Applications Havana, Cuba - Mach 24-26, 1997.