Ultraviolet light is used to cure, or harden, composite fillings.
White, tooth-colored fillings have a photo initiator within them that responds to ultraviolet light.
The energy within the light causes the initiator to polymerize the composite material and harden it into its final configuration.
Why do dentists use UV light when filling your teeth?
A dental curing light is a piece of dental equipment that is used for polymerization of light cure resin based composites. It can be used on several different dental materials that are curable by light. The light used falls under the visible blue light spectrum.
Is dental curing light harmful?
Fortunately, the blue dental curing light normally won’t hurt your teeth. Most of the modern curing lights use a blue LED light for curing. This heat could cause damage to the dental pulp — the innermost tissue composed of nerves and blood vessels inside of your tooth.
What is the best material for dental fillings?
Today, several dental filling materials are available. Teeth can be filled with gold; porcelain; silver amalgam (which consists of mercury mixed with silver, tin, zinc, and copper); or tooth-colored, plastic, and materials called composite resin fillings.
What does UV light do to your teeth?
UV Light Can Speed Up the Whitening Process. There is no proof that a UV light used by a dentist (during in-office whitening) speeds up the process of whitening or does a better job at whitening your teeth. In fact, it may harm the tooth and can damage your eyes, lips, and gums with UV rays.
Photo in the article by “Authority Dental”