Christine wanted to improve her smile. Her main concern was to lighten and brighten her teeth.
As the front three teeth are porcelain bridges, these do not whiten with the teeth whitening process. The only way of treating this case was to whiten her existing teeth first. (Believe it or not, her other teeth was A3.5 shade, as you can see, Christine achieved brilliant results) Once her existing natural teeth was whitened, then it is far easier to match her whitened teeth to her bespoke porcelain bridgework.
This was part of a two stage process. For the purpose of this presentation, whitening was already accomplished and this second stage was to replace the bridge to match her now whitened teeth.