With the gradual increase of dental resin restoration, the indispensable light curing lamp for resin restoration has become a necessary tool for dentists. However, this sharp tool can sometimes bring some major or minor problems to resin repair.
It is not accurate to measure the light intensity close to the light outlet of the curing lamp. Because LED light will disperse in the future when combined with light sources, resulting in a significant decrease in light intensity.
Measure the light intensity at a distance of 8 millimeters from the light outlet of the UV curing lamp, and many LED lamps experience a sharp decrease of 75% or more in light intensity.
Uneven light intensity can affect the conversion of UV cured materials.
Many UV curing lamps emit unevenly dispersed blue light - strong heat spots can effectively aggregate the UV curing material, while heat spots cannot.
There are two problems with glass fiber optical guide rods:
① When the optical guide rod is taken from the body at an angle of 30 or 50 degrees, it is difficult for light to shine on the posterior tooth restoration, which forces the patient to open their mouth, which is very embarrassing.
② Lose 30% to 50% of light intensity.
Summarize the current issues with most of the cheaper UV curing lamps
The output power of cheap LED curing lamps is only 300 to 600mW/cm2, and the lamp's lifespan is only 1000 hours.
A 7mm long small light guide rod requires more than twice the curing time.
Short service life, plastic body, fiberglass optical guide rod, inferior LED light source, inferior battery.
UV curing is a crucial step for successful repair, and if the curing is not in place, the following problems may occur:
2. Decreased adhesion - reduced retention force;
3. Regarding the toxicity of dental pulp - postoperative sensitivity;
4. Microleakage - secondary caries;
5. Reduce physical properties - increase the probability of wear and cracking;
6. Secondary caries and fracture are common clinical manifestations of incomplete light curing of two types of composite resins
How should we screen UV curing lamps?
The rejection time of the Light10 curing machine is 5 seconds for curing. After heat accumulation, patients may feel burning and discomfort. After long-term testing, 5 seconds of curing is the time setting for achieving comfort and a certain curing effect. Equipped with equipment, and we have built-in active thermal protection devices inside the curing machine. When the temperature reaches 41 degrees, the light curing lamp actively blocks to stop thermal injury.
The Light10 light curing machine does not use traditional light curing lamp settings and is equipped with placement of light guide rods. Instead, it uses a condenser lens, which can reduce the dispersion and attenuation of the light source output intensity outside the light guide rods, thereby ensuring the stability and maximization of the light source output intensity. The lamp head is equipped with two LED light sources, one with a wavelength of 370-410nm and the other with a wavelength of 410-490nm. Each light source can provide a light intensity of over 1200 MW/cm2.
The emission wavelength range of the Great UV curing machine is 420nm-480nm. The emission wavelength range of the Light10 light curing machine is 370nm-490nm, and the external 370nm-410nm band can better cure resin materials containing new photoinitiators such as TPO. For example, repair materials such as Tetrac N-Cerm Bulk Fill, Amelogen Plus, and ENAhri can reduce the risk of resin detachment and incomplete curing.
The lamp holder of the UV curing machine can rotate 360 degrees, and the curing head can be bent to various parts of the oral cavity. Moreover, a larger light source can also ensure that your larger area of resin can be cured in one go. This one-time solidification ensures the continuous curing effect of the resin, with a high degree of precision and adhesion. Eliminated the blemishes of multiple curing, different curing effects, and poor separation that are prone to detachment.