Gum damage can be a feature of power bleaching, but can be avoided largely by good isolation by the dentist (using the rubber dam or tissue dam). It is difficult to avoid gum irritation completely.
Hydrogen peroxide is more widely used as the power bleaching agent, but the concentration will vary from dentist to dentist, and the times used for the bleaching will vary as well.
|For more information on various bleaching techniques for teeth, including home bleaching, assisted bleaching, power bleaching, the thermocatalytic technique and the walking bleach technique, see Teeth Whitening.|
The safety of the bleach used in power bleaching has been shown to have no proven adverse effects on the or , that is, it is perfectly safe for your teeth.
Orihime is taken straight to Aizen's throne room in Las Noches. Terrified of Aizen's immense power, she is forced to demonstrate her abilities by Aizen so that others may observe them. Using Sōten Kisshun, she regenerates the left arm of , which had previously been incinerated by . Most of those present are shocked, Luppi in particular. Aizen explains her powers enable her to be able to trample upon the horizons that God himself has set in place. By Grimmjow's request, she then heals his scarred back, restoring his 6 tattoo. He swiftly kills Luppi to restore his Espada rank, much to Orihime's dismay.