In-office bleaching typically uses hydrogen peroxide at which minimum percentage?

In-office bleaching procedures are designed to provide significant and immediate whitening results, and that typically involves the use of higher concentrations of hydrogen peroxide. The minimum percentage of hydrogen peroxide commonly used in these procedures is 35%. This concentration is effective for activating the bleaching agents quickly and achieving noticeable results in a single visit.

Lower concentrations, such as 5% or 15%, are more suited for at-home whitening treatments, where patients apply the product over a longer period to minimize the risk of sensitivity and ensure safety. A concentration of 25% may also be used, but it does not reflect the standard minimum for in-office treatments. Thus, 35% is recognized as the effective minimum for professional use in a clinical setting, allowing dental professionals to safely administer the treatment with proper safeguards in place.