Pd. Marin et al., A QUANTITATIVE COMPARISON OF TRADITIONAL AND NON-PEROXIDE BLEACHING AGENTS, Endodontics & dental traumatology, 14(2), 1998, pp. 64-67
Single-rooted premolar teeth, stained with blood utilizing the techniq
ue devised by Freccia & Peters (1981), were subjected to traditional a
nd non-peroxide bleaching agents. Colour changes were recorded over a
period of 7 days using a Speedmaster R75-CP Reflection Densitometer. T
he most efficient removal of staining occurred after the application o
f 30% hydrogen peroxide, with sodium perborate being 75% as effective.
All bleaching agents realized their optimum efficacy within the first
3 days. A combination of three enzymes (amylase, lipase and trypsin)
with disodium edetate was not as effective as the routine bleaching ag
ents; however, the combination did have a modifying effect on the bloo
d stains. It is suggested that other non-peroxide agents should be inv
estigated to determine their efficacy in removing staining from experi
mentally induced blood-stained teeth.