AAPD-QE Practice Exam

Camphorquinone, a common photosensitizer used in dental applications, absorbs blue light primarily in the wavelength range of 400 to 500 nm. This absorption is crucial for initiating polymerization in light-cured dental materials. The blue light used in dental practices typically falls within this range, making camphorquinone very effective in these applications. Its ability to absorb this wavelength allows it to efficiently convert light energy into the chemical energy needed to initiate the curing process, which is an essential aspect of dental restoration and bonding materials. Understanding the absorption spectrum of camphorquinone helps practitioners select the appropriate light sources for effective polymerization.