A great way to make your smile stand out is to whiten your teeth. And while over-the-counter (OTC) options are cheap, they won't offer the same level of results as custom trays made by a dentist. So, although you can save money, ultimately, you may be disappointed with the results. Custom whitening trays are better than OTC options for several good reasons. 1. Stronger bleach Store-bought whitening trays contain whitening gels with a weaker concentration than the gels provided by a dentist.
26 January 2021