Nowadays, more and more people are suffering the painful from teeth, and the technology on dental firled is more advanced. All the patient can go to denistto cure their teeth with high technology. Here, we would like to talk about something about curing light.
Dentists use curing lights to harden composite material used for tooth fillings or bonding. The four different types of curing lights are LED, plasma, laser and halogen. The light waves produced by the curing light initiate a change within the composite and enable it to harden and bond with the tooth. The curing (hardening) process is quick, typically between 10 to 40 seconds, allowing the patient to leave the dentist office without worrying about damaging a filling.
Once the resin mixture is placed inside the patient's mouth it has to be cured, or hardened like ceramic. This means that a certain type of light must be shone onto the filling in order to harden it and bond it to the tooth. Definityly, it can't be harm to your root canal.
There are two main choices of light that will react with resin composite fillings, according to the American Dental Association. One is ultraviolet light, and the other is visible blue light. Both of these lights, while necessary to harden the fillings, can damage a patient's eyes. LEDs used in dental offices work in tandem with the chemicals used for bonding and bleaching. To be activated, different resins and bonding materials may require a different , intensity of light. Therefore, a dental office must choose the appropriate power of LED for each specific job.
Of these two types, ultraviolet light is more dangerous to a person's eyes. It can result in macular degeneration, and has been linked to cancer. Blue light may also degenerate a person's eye--just not as quickly as ultraviolet light.
It's one of the old realities of medicine that almost every procedure has some side effect. Dentistry is no different. In an effort to be safer by eliminating the use of silver amalgam fillings (which contained mercury, a poisonous metal), resin fillings were developed and used. However, the curing process for these filling can also be dangerous to a patient unless proper precautions are taken.
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