Who has had tooth whitening and is it worth £600.?

I have already tried cheaper methods and they were not very good. I would like to try the Brite Smile method where the dentist uses a blue light but am curious to hear from people who have had any procedure.UK only please.
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hi, I am a registered dental nurse and have been practising for 18 years...so the best tooth whitening method in my opinion is the one prescribed by a dentist and used in the home enviroment such as opalescence.This consists of having impressions taken of top or bottom jaw or both depending on what you wish to be bleached,a custom made tray is then manufactured to fit your mouth.In this tray in the comfort of your own home you place the tooth whitening product and wear for a minimum of 3 hours,most people tend to wear them over night and dont find them too uncomfortable.A trip back to the dentist up to 2 wks after initial whitening is normally required to check progress against the starting shade.The final shade reached is purely up to the wearer but it is important to note that once you stop "bleaching" there will be a small "bounce back" of colour as the effect of the whitening gel is to slightly dehydrate the tooth substance therefore making them look whiter.Also it is important to know that white composite fillings do not bleach as do not crown bridge work etc!so if you have any of those they will look darker in comparison.If you find after a few months or in most cases I have dealt with a year the teeth start to darken again you simply top up with more gel as you already have the trays.This normally depends on your diet,red wine,coffee etc!The initial ste up costs range from £250 to £300.This would be my prefered method as the "in chair" whitening system is quick the colour tends not to be as stable and they send you home with gel anyway.Also you have more control in which shade you end up with.The light I believe has the effect of heating the gel and making the process faster.Again I would prefer the gel as this I would think is gentler on the tooth....hope this helps
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