Light Curing

Light Curing

Light is energy. Without light, life on earth would be extremely intricate and difficult. Light is not only used for energy and viewing purposes, but it is also applied during different treatments by doctors and dentists. During the removal of cavities and root canal treatments, different types of resins are used by the dentists. These resins are used for filling the empty space and cavities and they are adhesive chemical compounds.

In order to maintain the strength of the tooth after the treatment and to make sure that the filling does not pull out when pressure is applied and during biting, these resins are compressed for maximum adhesion. By applying the right amount of density and compression, the resin becomes perfectly fitted within the tooth and its inner surface and the strength of the tooth is maintained. This is where light curing comes handy.

The light curing procedure employs a certain type of light; this may include a Halogen Lamp or Light-Emitting Diode (LED). This light has the potential to target and focus on the desired area in the oral cavity. By applying the light, the resins used during the treatment will gain strength and stability in the inner surface of the tooth. The adhering properties of the resins become enhanced by the light curing process.

Previously the Halogen light was most frequently used for the purpose, but then, with the advancement of technology, Light-Emitting Diodes, Ultra-Violet curing lights and Plasma curing lights were introduced and all these sources of light are now used by dental professionals.

Light activated resins are certain types of resins which are one-part translucent polymers and which have the ability to cure and promptly harden when exposed to certain light spectrums. The exact wavelength and extent of the light depends upon which light-activated resin has been applied by the dentist.

The application of the  light curing procedure is extremely convenient because the resins that are used for filling the cavities in the tooth remain in liquid form under normal circumstances. Upon the exposure of the resins to specific lights, they harden and turn into a solid form. Whilst they are in liquid form the dentist can easily apply the resins to the tooth and hence, the space is completely filled with the liquid resin. Afterwards, the dentist exposes the resin to specific lights which changes its the form from liquid to solid. The resin becomes completely adhesive and completely fitted within the inner surface of the tooth after the exposure to light.

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