The blue light we often see our dentists use is called a
Dental light curing units (LCUs) are hand-held light emitting devices used to cure such photo-activated polymer-based restorative materials (PBRMs).
A Dental Curing Light emits a bright concentrated blue light. This light tool is used to set or cure fillings and sealants quickly and effectively. In just a few seconds, it hardens dental work in place. There are two different types of Dental Curing Lights, halogen, and LED.
The tungsten halogen curing light, also known as simply "halogen curing light" is the most frequent polymerization source used in dental offices.
"The light sends wavelengths of blue-violet light to the composite, which triggers hardening," says Alpesh Patel, a rising MCG School of Dentistry junior. "The light waves produce free radicals that activate the catalyst and speed up polymerization of the composite resin.
The use of UV light for teeth whitening puts patients at risk of high levels of radiation to sensitive areas. Bleeding gums, sunburn, and severely burnt gums are among the common complaints, not to mention the possibility of getting cataracts, cancer, and other life-threatening illnesses."
Background: Dental light-curing units (LCUs) are powerful sources of blue light that can cause soft-tissue burns and ocular damage.
Is it safe? Since it is not a laser, the dental curing light is not dangerous to the teeth and gums. Since it is very bright, it can put a strain on your eyes if you look at it too long. This is similar to the way your eyes strain if you look at the sun for too long.
Studies show that blue light is an excellent activation agent for hydrogen peroxide, the cleaning agent in tooth whitening systems like Zoom!, giving your teeth a deeper clean in less time.
The teeth are coated with the whitening solution, which contains either hydrogen peroxide or carbamide. An LED blue light is placed over the teeth and the solution is left in place for 30 to 60 minutes, or additional reapplications may be done.
Your dentist will apply a whitening gel to your teeth. Then they will use a blue LED light, which activates the hydrogen peroxide or carbamide peroxide whitening gel. This helps break apart the gel faster.
The dentist places composites in layers to fill the cavity completely. Putting them in layers allows the dentist to shape the to fit nicely in the teeth to prevent a change in your bite. The composite is “cured” in place using a bright ultraviolet light to harden the composite resins very rapidly.
The light intensity of curing devices is defined by the International Organization for Standardization as the ISO 4049 standard, which recommends an intensity of 300 mW/cm2 with a wavelength bandwidth of 400-515 nm on the tip of the light curing device.
LED lights speed up the tooth-bleaching process by helping the peroxide to break down faster, forming free radicals that whiten the teeth.
It involves the use of strong bleach (highly concentrated carbamide peroxide or hydrogen peroxide), and light to accelerate the bleaching process. If you maintain good oral hygiene, its benefits could last up to 3 years. This involves the use of lasers to activate the bleaching agent and whiten the teeth.
Getting your Sparkle on in 16 mins! Remove the light and rinse your mouth thoroughly. Rinse the mouthpiece under running water and place it back into the case or bag. Repeat for 10 days for maximum results.
Unfortunately, teeth whitening is not permanent. The length of your results will depend on your unique case, but typically teeth whitening can last anywhere from a few months to 3 years.
UV, halogen, or LED light by itself does nothing to whiten teeth. Hydrogen peroxide or carbamide peroxide solutions are what get rid of stains and lighten teeth.
Light curing generates heat. 52-55 In 2012, three clinical cases were reported where one brand of LED curing light may have caused burns to the lips. 56 The authors recommended that no soft tissue should be near the tip of the curing light.
Over exposure to blue light cure without protective measurements can induce apoptosis to the cornea, increased ocular inflammation and dryness of the eye. The short term risks associated with dental Lights cure is particularly low if safety measures are used.
The first light-cured restorative materials used photoinitiators that were activated by ultraviolet (UV) light. However, issues of color stability, depth of cure, and tissue damage – notably cataracts – associated with UV light exposure made them less than ideal for clinical use.
In dentistry, blue light is widely used for tooth bleaching and restoration procedures involving composite resin. In addition, many dentists use magnification loupes to enable them to provide more accurate dental treatment. Therefore, the use of light is indispensable in dental treatment.
Some nail lamps are called “UV” lamps, and some are called LED lamps, but both emit UV radiation. They predominantly produce UVA rays, which have been linked to both premature skin aging and skin cancer.
The resulting soft tissue burns resemble ulcers and may not be recognized as related to the light curing procedure. Clinicians should ensure the light is neither placed on, nor shone onto, the lip, tongue, or other intraoral tissues.
This "blue wand" is a curing light. This light is used for polymerization of light-cured resin-based composites or, in other words, the white filling that we put in a tooth. There are several materials that are curable by light. These lights can be Tungsten halogen, LED, plasma, and laser.