Richard WJ Porter

Consultant in Restorative Dentistry, St George's Hospital, London, UK

An update on discoloured teeth and bleaching part 2: mechanism of action of bleaching agents and management of discoloured teeth

The compound directly resulting in the bleaching effect, hydrogen peroxide, is an oxidizing agent. Hydrogen peroxide breaks down in the presence of water to yield water and a free radical species....

An update on discoloured teeth and bleaching part 1: the aetiology and diagnosis of discoloured teeth

Generally speaking, discoloration of teeth may be either intrinsic or extrinsic, and may present in isolation or affect the dentition generally. Tooth discoloration may also be classified as...

Bleaching and bonding for the older patient

The efficacy of nightguard vital bleaching has been established in multiple randomized, double blind, controlled clinical trials.3–4 Nightguard vital bleaching was first popularized by Haywood and...