Degradation of gel in tray whitening.

B A Matis

Journal: Compendium of continuing education in dentistry. (Jamesburg, N.J. : 1995). Supplement 2002

PMID: 11908345

Abstract

This article will address the breakdown or lowering of active bleaching agent concentration during use in the mouth. A greater than expected degradation occurs during the first 5 minutes followed by an exponential rate loss. Subjects have a large variation in degradation rates. After 2 and 6 hours there was 52% and 24% respectively, of the active agent present in a carbamide peroxide gel. The presence or absence of the pellicle did not affect the rate of degradation. The relationship of gel degradation to the whitening capability of a gel is yet to be determined.

Address: Clinical Research Section, Indiana University, School of Dentistry, Indianapolis, Indiana, USA.

MeSH Terms: Biodegradation, Environmental, Dental Deposits, Dental Devices, Home Care, Dental Pellicle, Dose-Response Relationship, Drug, Gels, Humans, Hydrogen-Ion Concentration, Oxidants, Peroxides, Saliva, Tooth Bleaching