There are loads of different ways to whiten your teeth. Teeth whitening gels are probably the most widely used home treatment, and they use the same chemicals as dentists do to whiten teeth so they are very effective. So if you use teeth whitening gels from home, you are getting a similar level of results to visiting the dentist, but for a fraction of the cost.
There are obviously some differences to consider between home and dentists treatments. When you use a teeth whitening gel from home using trays to apply the gel you will not get the same level of even coverage as if you have a specially made mold from the dentist. This is because a dental professional will take an exact cast of your teeth, but if you buy and over the counter product you will get a tray that is about the right size for your teeth. The tray, whether personalized or not, is filled partly with gel and then you bit down on it to hold it in place on your teeth. The problem with these home kits therefore comes from not having a tray that fits to your teeth exactly. This just means that you need to be careful in the use of the tray and make sure you get as even a coverage as possible.
If you get a dental whitening treatment, then you can be sure that the mold will fit your teeth exactly, so you can get even coverage more easily. You can always tray out the standard sized trays and see how they work for you. If you find that they fit OK then you will be fine, but if they are way off then it might be worth at least getting a mold from a dentist. The best teeth whitening product for you will be a gel with trays that fit your teeth well. It’s worth trying out quite a few different products and noting the performance of each until you find the one that works the best for you. Keep trying different products until you find the right one. This may take one attempt or it may take a few, but stick with it as it will certainly be worth it in the end.