There are major points to consider;
Safety - As already mentioned, illegal dental hygiene is still rampant, and a combination of improper dental implants, leaky trays and impurities containing harmful acids and harmful particles poses a serious risk.
The legal limit for Hydrogen Peroxide (an agent used to whiten teeth) that dentists can apply in the UK is 6%. Regulations here limit the amount of Hydrogen Peroxide to as much as 0.1% on any item off the shelf. This is 6000 times weaker than professional whitening and has little effect on long-term whitening of the teeth. Beware of "whitewashing brushes" many of these are harmful and may remove some of the stains but will also remove the enamel over time.
Effectiveness - Many internet-based providers use a variety of whitening and UV lamps. Unfortunately, the reality of these programs is that all they do is dehydrate your teeth so that for a while (48 hours high) they will look a little whiter. There is a big question about their safety and the long-term damage they do to teeth and gums.
How do I start professional teeth whitening at Complete Smiles?
Your health and safety is very important to us at Complete Smiles. After conducting a thorough medical examination of your teeth and gums, we will address your options of using dental whitening technology. We will take a closer look at the current colour of your teeth and talk about how you can achieve the desired shade. Even more important is the consideration of dental work you have had in the past. If you have had crowns, veneers, bridges, or a composite bonding, it should be considered how you can keep your smile as pleasing to the eye as possible, as composite materials will not change colour with just any type of teeth whitening. An Initial Consultation with one of our dentists will lead to creating a bespoke treatment plan suitable for you. Click here to schedule your consultation and take the first steps to a bright white smile.