In-office dental bleaching with light vs. without light: A systematic review and meta-analysis

Conclusion Without considering variations in the protocols, the activation of in-office bleaching gel with light does not seem to improve color change or affect tooth sensitivity, regardless of the hydrogen peroxide concentration. (PROSPERO − CRD42016037630). Clinical Relevance Although it is commercially claimed that in-office bleaching associated with light improves and accelerates color change, this study did not confirm this belief for in-office bleaching gels with either high or low levels of hydrogen peroxide.
Source: Journal of Dentistry - Category: Dentistry Source Type: research