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BORNANEDIONE

Description

Bornanedione, also known as camphorquinone, is a potent photoinitiator widely used in dental and medical applications, particularly in light-cured resin composites. This yellow crystalline solid belongs to the class of α-diketones and exhibits a characteristic camphor-like odor. With a molecular formula of C10H14O2, bornanedione has a molecular weight of 166.22 g/mol and melts at approximately 197-203°C.

In dental materials, bornanedione serves as a crucial component in the polymerization process of composite resins. When exposed to blue light (wavelength around 468 nm), it generates free radicals that initiate the curing reaction, transforming the liquid resin into a solid material. This property makes it invaluable in tooth restorations, dental adhesives, and other light-cured dental products.

Despite its effectiveness, bornanedione has limitations, including potential cytotoxicity and the yellowing effect it imparts to the final cured product. Recent research has focused on developing alternative photoinitiators to address these issues. In skincare formulations, bornanedione is rarely used due to its strong yellow color and potential for causing photosensitivity reactions. Its application remains primarily confined to the dental and medical fields where its polymerization properties are most beneficial.