When it comes to professional teeth whitening, there are two different types. Both of these options penetrate the dentin and enamel layers of your teeth to provide deeper whitening solutions.
In-office whitening is a procedure that happens at your dentist office and is completed with a professional-grade bleaching agent that is applied to your teeth. Your dentist might also use a special UV light to speed up the whitening process.
At-home whitening is a process you complete at your house with a whitening kit that your dentist gives you. This kit has custom mouth trays the dentist creates specifically for your teeth. You'll need to fill this tray with the whitening gel and put them on your teeth. This is a process that takes about two weeks to complete.