Blue Phase Light Cure

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Blue Phase Light Cure
Bluephase PowerCure The high-performance curing light with intelligent curing assistant Are you looking for a curing light that can do more? If so, you will enjoy using the Bluephase PowerCure. The high-performance curing unit combines intelligence with efficiency.

Activate the smart light curing assistant featuring patented Polyvision technology. The light curing assistant detects the movement of the handpiece during the polymerization process and alerts you to any improper operation.

Maximum compatibility with different materials: suitable for the polymerization of all types of current light-curing dental materials. High light intensity enables the polymerization of direct and indirect restorations. Uniform polymerization due to even light distribution.

The backlit display keeps you informed about the curing program and time of the curing process. Four light curing modes ensure versatile use.

Wide, swivelling light guide helps save time. Short light exposure times starting from 3 seconds.

The intelligent light curing assistant of the Bluephase PowerCure detects when the handpiece shifts during polymerization. Slight shift

One vibration signal Extension of the light curing time by 10 per cent

Considerable shift

Three vibration signals Acoustic signal Termination of the curing process Repetition of the polymerization process

When the light tip points into open space, the device cannot be activated. Proper use is a prerequisite for sufficient polymerization. What is more, the quality of the device is just as important.

Unlimited compatibility with different materials The wide spectrum of wavelengths renders the light suitable for all current light-curing dental materials. High light intensity The high light intensity of the curing light enables it to polymerize both direct and indirect restorations. Consistent light performance The light intensity of every curing mode is calibrated to +/–10 per cent. Uniform polymerization Due to homogeneous light distribution across the light tip.

Beam profiles of the curing light modes of the Bluephase PowerCure The beam profiles taken under identical conditions at a distance of 0 mm by Dr Richard Price, Dalhousie University, Canada, show the distribution of the unfiltered blue and purple light at the tip of the Bluephase PowerCure light guide. The backlit display keeps you informed about the curing program and time of the curing process. You can choose between four different light curing modes

3sCure mode: 3000 mW/cm 2 Reliable curing of Adhese ® Universal and the 4-mm composites Tetric ® PowerFill and Tetric ® PowerFlow in only 3 seconds. Turbo mode: 2000 mW/cm 2 5-second curing. Suitable for all types of restorations, particularly suitable for the polymerization of luting composites under indirect restorations. The high light intensity ensures that enough energy passes through all-ceramic crowns and inlays: e.g. made of IPS e.max ® or IPS Empress ®, High-power mode: 1200 mW/cm 2 Suitable for common day-to-day treatments. PreCure mode: 950 mW/cm 2 Particularly suitable for the removal of excess light-curing adhesive luting composites, e.g. Variolink Esthetic.

In most cases, the 9-mm light guide enables efficient one-time light exposure, The high-performance Bluephase PowerCure offers short light exposure times starting from 3 seconds, In direct procedures involving Class I and II restorations, the treatment time can be reduced by up to 51 per cent, You can cure Adhese Universal, Tetric PowerFill and Tetric PowerFlow in only 3 seconds using the 3sCure mode.

In the restoration of Class I and II cavities in posterior teeth, Adhese Universal, Tetric PowerFill and Tetric PowerFlow can be light-cured in only 3 seconds from the occlusal aspect using the 3sCure mode of the Bluephase PowerCure. Only suitable for Class I & II restorations in posterior teeth light-cured from the occlusal aspect.

What is the cost of Ivoclar bluephase curing light?

Ivoclar Bluephase N MC @ INR 33000 | Lowest price online Light curing.

What light do dentists use to cure?

Tungsten halogen – Halogen lamp based curing light. In the halogen curing light the power supply feeds a cooling fan and a small halogen lamp attached to a reflector. The blue light is produced by a dichroic filter and directed by a waveguide, The light is temporarily switched on by pressing the trigger.

  1. The tungsten halogen curing light, also known as simply “halogen curing light” is the most frequent polymerization source used in dental offices.
  2. In order for the light to be produced, an electric current flows through a thin tungsten filament, which functions as a resistor,
  3. This resistor is then “heated to temperatures of about 3,000 Kelvin, it becomes incandescent and emits infrared and electromagnetic radiation in the form of visible light”.

It provides a blue light between 400 and 500 nm, with an intensity of 400–600 mW cm −2, This type of curing light however has certain drawbacks, the first of which is the large amounts of heat that the filament generates. This requires that the curing light have a ventilating fan installed which results in a larger curing light.

  • The fan generates a sound that may disturb some patients, and the wattage of the bulb is such (e.g.80 W) these curing lights must be plugged into a power source; that is, they are not cordless.
  • Furthermore, this light requires frequent monitoring and replacement of the actual curing light bulb because of the high temperatures that are reached.

(For example, one model uses a bulb with an estimated life of 50 hours which would require annual replacement, assuming 12 minutes’ use per day, 250 days per year.) Also, the time needed to fully cure the material is much more than the LED curing light.

Is dental curing light harmful to eyes?

Dental light-curing units (LCUs) are powerful sources of blue light that can cause soft-tissue burns and ocular damage.

Is Ivoclar a good brand?

Ivoclar Vivadent has an overall rating of 3.9 out of 5, based on over 98 reviews left anonymously by employees.

What is the price of Ivoclar?

Ivoclar Vivadent MultiCore Flow Refills & Accessories Core build-up in vital and non-vital teeth Ivoclar Vivadent Marketing India Pvt Ltd Shed No B Khasra NO 3192 2121 Tajnagar Tehsil Farooqnagar Gurugram Haryana 122506

Core build-up in vital and non-vital teeth

MultiCore HB for the moulding technique MultiCore Flow for the matrix technique

Advantages

A suitable option for every case: Self or light-curing and 4 different shades: light, medium, white and blue Based on Ivoclar Vivadent’s long-term experience in the field of composite technology

: Ivoclar Vivadent MultiCore Flow Refills & Accessories

How does blue light harden fillings?

A blue curing light used to harden dental fillings also may stunt tumor growth, Medical College of Georgia researchers say. “The light sends wavelengths of blue-violet light to the composite, which triggers hardening,” says Alpesh Patel, a rising MCG School of Dentistry junior.

  1. The light waves produce free radicals that activate the catalyst and speed up polymerization of the composite resin.
  2. In oral cancer cells, though, those radicals cause damage that decreases cell growth and increases cell death.” Mr.
  3. Patel, who has been working with Dr.
  4. Jill Lewis, associate professor of oral biology, Dr.

Regina Messer, associate professor of oral rehabilitation and oral biology, and Dr. John Wataha, adjunct professor of oral rehabilitation and oral biology, studied 10 tumor-bearing mice, five treated with the light and five untreated. He exposed half the mice to the blue light for 90 seconds a day for 12 days.

Then the tumors were extracted and each one was split into two sections. Half were used to create slides for tissue analysis, and half were frozen to prepare protein extracts. Tissue analysis indicated an approximate 10 percent increase in cell suicide, or apoptosis, in the light-treated tumors. The frozen protein extracts revealed a nearly 80 percent decrease in cell growth in the light-treated tumors.

“The decrease in cell growth, combined with increased apoptosis, helps explain why the tumors didn’t grow as much because you have cells that aren’t dividing and you have cells that are committing suicide,” Mr. Patel says. Dr. Lewis predicts treating the tumors with blue light sooner will increase the rate of apoptosis, possibly preventing the tumor from ever becoming measurable and easing treatment.

“One desirable feature we’ve observed with the blue light is that non-cancerous cells appear unaffected at light doses that kill tumor cells,” says Dr. Lewis. “We’re thinking that some day, blue light therapy may serve as an adjunct to conventional cancer therapy. Patients may, therefore, receive lower doses of chemotherapy, which would decrease the adverse effects most cancer patients experience from standard chemotherapy regimens.” Mr.

Patel presented his findings at the 2008 American Association for Dental Research Student Research Group DENTSPLY/Caulk competition, winning third place in the basic science category. He and rising junior MCG School of Dentistry student Beth Rainwater were two of only seven students nationwide to be selected for the competition.

What does blue light do to a filling?

How it works: – The blue light we often see our dentists use is called a dental curing light. The majority of dentists today use LED curing lights to set fillings and sealants. When you have a cavity, your dentist removes the tooth decay with a drill and prepares the tooth for a dental filling.

Does blue light damage teeth?

Is Blue Light Bad for Your Teeth? – The answer is no. Your teeth are unaffected by being exposed to blue light. This was the case even with the older plasma-based devices with a risk of overheating. With teeth made from calcium, the risk isn’t to these rigid structures.

  1. Blue lights have a massive impact on accelerating the curing of resin-based composites, but they’re not strong enough to penetrate the teeth or cause permanent damage to soft tissues.
  2. In the past, the main risk of using a blue light dental tool was damage to the soft tissues.
  3. Dentists of the time had to be extremely careful of how long they exposed the mouth to blue light.

Overheating could lead to discomfort and injury. LED lights are so heavily favored because they don’t produce heat. Dentists can use them without worrying about soft tissue injuries. Much of the discussion over blue light dental tools has related to other potential injuries.

Is dentist blue light safe?

2. Effects of blue-light irradiation on oral tissues – As mentioned earlier, active measures are taken to protect against the effects of blue light on the eyes. In addition, attention is also given to temperature rises caused by blue-light irradiation.

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What happens if you look at blue dental light?

Conclusion – This review concludes that blue light poses maximum risk to cause retinal degeneration based on the evaluated studies. Most of the studies recommend the use of protective eyewear in order to limit exposure of the patient, operator and assistant to the LCUs.

What is the wavelength of blue light in dentistry?

Dental Curing Lights Key Points

  • The ability to easily and effectively cure polymer-based restorative materials using light energy has revolutionized the field of dentistry over time.
  • For a light-cured resin-based restoration to function and last as intended, it must receive the required amount of light energy at the proper wavelength (i.e., the wavelength of the photoinitiator) to facilitate optimal polymerization.
  • To deliver the required amount of light energy, it is necessary to understand how clinical variables such as curing tip distance and angle of incidence with respect to the restoration surface influence the curing process, as well as exposure time and curing tip diameter.
  • Proper infection control procedures when using curing lights support both patient safety and equipment maintenance.
  • It is important to consider that curing lights can cause an intrapulpal temperature rise. Proper eye protection helps prevent blue-light-induced retinal injury.

Photoactivated dental materials, including certain sealants, resin-based cements and composite restorative materials, are an integral part of general dental practice. Dental light curing units (LCUs) are handheld light-emitting devices used to cure such photoactivated, polymer-based restorative materials (PBRMs).1 Dental professionals spend considerable time performing tasks that involve using PBRMs, and the convenience of being able to rapidly light cure these dental materials has transformed dentistry over time.

In the contemporary marketplace, there are a wide variety of dental LCUs, and the technology has developed continually since photocuring was first used in dentistry.2, 3 Photopolymerization is a light-activated reaction that uses visible light energy to activate a photoinitiator system, which absorbs light photons and produces reactive species (free radicals) that initiate the polymerization process.4-7 In dentistry, resin-based composite materials are commonly comprised of a polymer resin matrix (typically containing dimethacrylate monomers, photoinitiators, accelerators and other compounds) and inorganic filler particles (e.g., silica, alkaline glass).8 As long as the wavelength of the light matches the absorption range of the photoinitiator (in the presence of activators) with sufficient energy, a variety of light sources may be used for photopolymerization in dentistry, as discussed below.

One of the most commonly used photoinitiators in dental resins is camphorquinone (CQ).4 The peak absorption range for CQ is from 455 to 481 nm, with peak absorption at approximately 469 nm.9, 10 The first light-cured resins used in dentistry date to the early 1970s and were cured using ultraviolet (UV) LCUs.11 The photoinitiators used with these materials were based primarily on benzoin methyl ether or similar types of photoinitiators activated by UV.4 Examples of concerns about early UV-curing LCUs included resin color instability, limited depth of cure, and UV-promoted tissue damage, such as acute and longer-term eye damage.4, 11 However, shortly after the introduction of UV-curing, dental materials were reformulated to include visible light wavelength photoinitiators, such as CQ.4, 11 As a result, curing units designed to emit UV light were replaced with LCUs that emit light in the visible spectrum, including quartz-tungsten-halogen (QTH) lights.11, 12 In contrast to UV LCUs, QTH curing units emit blue light as part of their spectral output, require shorter curing times and are associated with lower risk of cataracts.

However, the blue wavelengths emitted by QTH LCUs are not without their own risks, such as the risk of direct retinal damage.11 In the mid-1980s (when QTH LCUs were commonly used), researchers advised clinicians to wear blue blockers for ocular protection, 11, 13, 14 and in 1986, the ADA issued a recommendation to wear appropriate protective filtering eyeglasses when using this type of LCU.15 Recommendations for ocular protection extend to modern-day use of light-emitting diode curing lights, which also emit blue light, and several groups have called for use of orange (i.e., blue-light blocking) glasses or shields to be worn during all light-curing procedures (see “Blue Light Hazard” section for more information).16-18 Training,

The type of LCU and the technique employed by the person using it can have a significant effect on the quality of the restoration, and there is potential for considerable variability in radiant exposure delivered by different operators.3 A preclinical light-curing simulator called MARC (Managing Accurate Resin Curing) 19 was developed to help clinicians learn proper curing techniques.

MARC uses simulated restorations and provides values for irradiance received by the restorations during curing, along with radiant exposures. MARC also provides the spectral distribution for the curing light. A study using the MARC simulator found that the actual amount of light energy deposited on a restoration was often much less than that estimated by the clinician.20 Common terms: Irradiance (Radiant Incidence), Radiant Exitance, Power, and Radiant Exposure (Table 1),

The word “intensity” is often used in discussing curing lights, but the terms “irradiance” (radiant incidence) and “radiant exitance” are more precise. Irradiance (radiant incidence) is a measure of the radiant power striking a specific area and emitting from the curing unit tip; radiant exitance is a measure of the power radiated outward from a source of a specific area (e.g., from the curing unit tip).21 Irradiance is dependent on the power striking a specific surface area and, thus, can vary with distance from the curing unit tip.

By contrast, the radiant exitance of a curing unit is a constant value, since the area of the curing unit tip and the power radiated from this tip are both for the most part constant (“for the most part” is used here because, just like a home-use light bulb, the power can slowly change over time as the bulb ages and then fails; with LCUs, power can also change if the tip is damaged or contaminated).

Irradiance and radiant exitance are often reported in mW/cm 2 by LCU manufacturers. Radiant exitance is also recommended to be included in the manufacturer’s instructions for use, according to the American National Standard Institute/American Dental Association (ANSI/ADA) and International Organization for Standardization (ISO) standards for dental LCUs.

Another term commonly used when characterizing LCUs is power. Similar to the constant rate at which water flows out the nozzle of a hose, the power radiated by a LCU can be reported as a rate (energy emitted per unit time), which can be expressed in joules per second (J/s). The power emitted by lights is typically reported in watts (W), like home-use light bulbs that have a power rating of 40 W, 60 W, 75 W, etc.

Watts can also be used to express the power output of an LCU. However, because dental light curing is done over a period of time, such as 10 or 20 seconds, the power output of a curing unit can be thought of as a rate, with 1000 mW being equal to 1 W, which is equal to 1 J/s.

When thinking about how much light energy is deposited on a restorative material, power can be considered as a rate that is multiplied by curing time to yield energy, as described in the next section on radiant exposure. Another important term for understanding the process of curing polymer-based restorative materials is radiant exposure, which is used to describe the total amount of light energy deposited on the material during curing.21 Radiant exposure can be determined by multiplying the irradiance by the curing time.

That is, the radiant power striking the area of the resin being cured (the irradiance received at the resin) can be multiplied by curing time to yield radiant exposure. As stated above, thinking about power in terms of rate makes it easier to consider the total amount of light energy deposited on the polymer-based restorative material during curing.

  • For example, when irradiance is expressed in joules per second per area (J/s/cm 2 ) instead of W/cm 2, it can more easily be seen that multiplying irradiance by curing time (in seconds) yields radiant exposure, or energy deposited on the restoration during curing, in J/cm 2,
  • Therefore, if the irradiance value is 1000 mW/cm 2 and the curing time takes 20 seconds, then 20 joules of energy have been delivered to the area of resin that the curing light is striking.

This is because the 1000 mW/cm 2 can be expressed as 1 W/cm 2 or 1 J/s/cm 2, and then multiplying by the 20-second curing time yields 20 J/cm 2, or 20 J of light energy deposited on the area of resin the curing light is striking.

Table 1. Commonly Used Terms
Term Curing Unit Characteristic Measure
Irradiance (Radiant incidence) Measures the radiant power striking a specific area Varies with the distance from the curing unit tip mW/cm 2
Radiant exitance Measures the power output from a source of a specific area Essentially* a constant value mW/cm 2
Power Light radiating from a curing unit tip Joules per second (J/s)
Radiant exposure Amount of light energy deposited on the polymer-based restorative material during curing Joules per centimeter squared (J//cm 2 )

“Essentially” is used here because power can slowly change over time as the bulb ages and then fails or if the tip is damaged or contaminated. FDA Clearance of Dental Curing Lights. To market or sell a dental curing light in the United States, the U.S.

Food and Drug Administration (FDA) requires a (i.e., 510(k)) submission.22 The FDA has provided a that identifies the issues they believe should be addressed in a 510(k) submission for a dental curing light.23 Among other items, the document identifies risks to health from the use of these devices and recommends measures for mitigating these risks, including labeling, proper infection control procedures, maintenance, and testing according to performance specifications, such as those detailed in ANSI/ADA and ISO standards.24 The FDA specifically prohibits companies from marketing their devices as having been “cleared by FDA.” 25 However, a dentist may determine whether a dental device has, indeed, been cleared by FDA by checking the,

This database provides a listing of all devices the FDA has cleared since 1976. (Note: Many devices are exempt from 510(k) clearance, and devices on the market before May 28, 1976, are grandfathered and do not require FDA clearance). For each device type, the FDA has assigned a “product code”, which is “EBZ” for dental curing lights.

Entering “EBZ” on the website will provide a list of all dental curing lights the FDA has cleared, including product name, date, 510(k) numbers, manufacturer, and even summaries of the 510(k) submission. (Note: Product names change so if you do not see your device listed on the list of FDA-cleared devices, this does not automatically mean the device has not been cleared).

The FDA’s at the Center for Devices and Radiological Health (CDRH) can provide information on whether a curing light has been cleared by the FDA or is being illegally marketed. The labeling and instructions for use of a curing unit may provide additional indications about whether a device has FDA clearance.

FDA reviews labeling and instructions for use as part of their clearance process; 26 if information is missing, poorly written, or if exaggerated claims are made, it may suggest further investigation is warranted. Blue Light Hazard, Blue-light retinal injury takes place primarily from exposure in the wavelength range between 380 to 550 nm, with the sensitivity of the retina peaking at approximately 440 nm.27, 28 Since the peak absorption for CQ is from about 455 to 481 nm, dental curing units are optimized to perform in the wavelength range that blue-light retinal injury takes place, with many having peak wavelengths near the retina’s sensitivity peak of 440 nm.10 It has been shown that under certain clinically relevant conditions, the light emitted from dental curing units may exceed dose limit values for photochemical retinal exposure over an 8-hour workday with an exposure duration of just under 3 hours, as set in international radiation protection guidelines.27-29 Blue-light filtering eyewear, curing unit tip-mounted shields, and handheld paddles are all options for eye protection while using curing lights.18, 30 Using quality eye protection in good condition that filters blue light at the same wavelengths as the LCU being used is recommended for all procedures using a light curing unit.16, 31 However, there is evidence that there are commercially available protective filtering devices that allow blue light transmission at significant levels.

For example, research performed at the ADA laboratory found that 9 of 22 protective filtering devices allowed transmission of blue light from dental curing units at levels ranging from above 4% to above 15%, when tested under clinically relevant conditions.30 In a similar study performed at the Nordic Institute of Dental Materials, only 9 of 18 protective filtering devices were shown to demonstrate adequate filtering capacity according to international radiation protection guidelines.32 Currently, there is no standard that specifically sets test methods, requirements, and labeling for protective filtering devices intended for protection against retinal blue light exposure from dental curing units.

  • There is a blue-light filtering device standard working draft being developed in a subcommittee of ISO Technical Committee 106 Dentistry.
  • In the meantime, there is an existing ISO standard for eyewear used for protection against intense light sources in cosmetic and medical settings.33 This standard specifies transmittance requirements for protective filtering devices based on a “blue light” B-classification scheme of B-1 to B-6 (most to least blue light transmittance) with corresponding labeling instructions.
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Also, if clinicians are concerned that their blue-light filtering device is not effectively blocking blue light, there is a simple, practical experiment that could be done to test the filtering device’s efficacy. In a dark room, take the light-cured polymer-based restorative material and do the following steps: distribute a clinically relevant increment of the material (about 6 mm in diameter and 2 mm thick) on a pad; place the protective filtering device just above the material; place the curing unit just above the protective filtering device and cure for about 20 seconds.

  1. After performing this procedure, if the polymer-based restorative material shows signs of curing, then the protective filtering device is not adequately blocking transmission of blue light.30 Heat and Temperature Concerns,
  2. Temperature rise during the curing process raises concern for the risk of heat-induced pulpal injury.

While irradiance and exposure time are important factors in proper curing, they also need to be considered with respect to the risk of thermal injury to pulpal and soft tissues. Special consideration should be taken when curing deep cavities, where there is less dentin to dissipate the total energy deposited on the dentin from the light source, increasing the concern of pulpal tissue injury.3, 34 In an in-vitro experiment testing 7 LED LCUs and 1 QTH LCU, ADA researchers found that the temperature rise of a thermocouple (embedded 1 mm into a 3-mm increment of composite) ranged from 9.8 to 12.9 ºC (49-55 ºF), when curing for 20 seconds with the curing unit tip centered 2 mm above the composite surface.9 It is not clear from the literature above what specific temperature threshold pulpal injury may occur, but tooth temperatures are elevated from curing resin polymers.35-37 Directing a stream of air over the tooth during the curing process, and/or waiting several seconds between curing cycles, can help prevent overheating the tooth.20 (Note: part of the heat rise is due to the exothermic reaction that accompanies resin polymerization) Interference with Medical Devices,

  • There has been some concern regarding the potential for interference between various electrical devices used in dentistry and pacemakers and/or defibrillators (for more information, see Oral Health Topic ).
  • A 2015 study found, however, that these devices (including LCUs) do not interfere with pacemakers or implantable cardioverter defibrillators, and that there is no clinical impact on the safety of patients who have these devices.38 Infection Control,

Just as with any other instrumentation that comes into contact with bodily fluids, parts of the LCUs must be disinfected to control for infection and cross-contamination. The ADA recommends that dentists follow the 2003 Centers for Disease Control and Prevention 39 and the 2016,40 LED lights with autoclavable light guides are the gold standard in terms of infection control but can be easily damaged or contaminated with an accumulation of tip surface scale.16 As mentioned earlier, this can be managed with proper upkeep and polishing.

  1. Many modern LED curing units do not use light guides, but instead have the LED chips mounted directly in the light-emitting tip of the curing unit, making autoclaving of the unit unfeasible.
  2. Using barriers that cover either the tip or the entire curing light is another way to help prevent contamination.

However, the use of infection-control barriers reportedly may reduce irradiance values delivered from the curing unit by as much as 40%.31 The light output of the curing unit, both with and without infection control barriers, can be compared using a dental radiometer, and the curing time can be appropriately adjusted based on the percentage decrease in output.

Some commercial disinfectant sprays can cause damage to the equipment, which can be mitigated by using only recommended surface disinfectants for the recommended time. ANSI/ADA and ISO standards recommend that curing unit manufacturers provide appropriate cleaning and disinfection methods in the instructions for use, which should be followed between each patient.3 Reporting Adverse Events.

If an adverse event should occur (e.g., thermal injury) when using a dental curing light, consider reporting it to the FDA through, the FDA’s gateway for clinically important safety information, safety alerts and product recalls.41 An ADA Professional Product Review (PPR) article on “The FDA, Medical Recalls and Reporting Adverse Events” provides a summary of the FDA’s MedWatch Program, including “What to Report to FDA MedWatch”, “Voluntary Medical Device Reporting”, and “Who Recalls Medical Devices?” 42 There are a number of considerations to be taken into account when purchasing an LCU (Table 2).

Table 2. Considerations When Buying a Light Curing Unit (LCU).
Characteristic Considerations
Battery life The current state-of-the-art battery type is lithium-ion. Nickel cadmium (NiCad) batteries do not provide long-lasting charges and are thus avoided by many dentists. Clinicians can think about the longest exposure duration they perform and how many times that exposure is delivered to see if a given battery will last for a given procedure or set of procedures. In battery-operated LCUs, the amount of curing time that each full charge offers can vary from about 26 minutes to 164 minutes.9
Beam divergence and footprint of light If a light is shined on a piece of paper, the uniformity of light can be examined. Some areas may appear brighter than others. Beam spread can also be qualitatively measured by slowly moving the light tip away from the piece of paper and noticing how quickly the size of the circle increases.
Effective light range The term “blue LED” is not necessarily consistent between lights and does not mean that it will cure all resins. Lights emitting between 455-481 nm are most effective as they span the peak absorption range for camphorquinone.
Energy needed for polymerization Consider the amount of energy needed to polymerize the bottom-most layer of the restoration when selecting from lights with different outputs.
Heat dispersion LED chips can be driven past their capacity and potentially overheat, and light output of the LCU can be greatly reduced if excess heat is not removed. Metal heat sinks are designed to absorb excess heat generated at the chip. If the LCU feels very light without the battery inside, then there may not be a heat sink in it. Some LED lights have built-in thermostats designed to automatically shut down after reaching a threshold temperature.
Infection control method The gold standard for infection control is removable light tips that can be autoclaved. Some disinfectants can negatively impact the LCU by harming the light-transmitting ability of glass-fibered light guides or by degrading plastic cases, lenses, light guides, and electronics.
Intraoral ergonomics Clinicians can check whether the LCU light tip can reach difficult locations in the mouth, especially in children who may not sit still or older patients who may have limited range of motion in the jaw.
Intrapulpal temperature Clinicians can test how much heat is produced by shining a light on the underside of the wrist. If shining the light begins to cause discomfort before the necessary amount of cure time has elapsed, the clinician may want to reconsider using that LCU for that amount of time.
Multiple wavelengths Poly-wave LED lights emit light at multiple wavelengths, which is useful for curing composites with more than one photoinitiator. It is also worth noting that the different beams in poly-wave LCUs do not mix well, so on a given surface, it is quite possible that one area is receiving light at one wavelength while another area is receiving light at a different wavelength. The clinician may thus need to move the curing light across the surface to help ensure that the composite is receiving light at all of the necessary wavelengths.
Turbo tip and focal effect Turbo tips focus the power over a smaller area, resulting in an increased irradiance. This smaller area means, however, that repeated, overlapping exposures will be needed to cure across the surface of the restoration. Turbo tips also have a focal effect, where the focal point is the distance away from the site where measured irradiance is greatest. If the tip is held farther away than this, it will deliver less irradiance than a standard tip.
Unit integrity Squeeze the handle of an LED light before buying. If there are cracks or openings between the sections, fluids or disinfectants may be able to enter through those openings. Activation buttons that are blister covered will be less likely to allow these fluids to interfere and cause damage to electronic components.
Use of a handheld radiometer Bring a handheld radiometer to trade shows to compare the light intensities of different LCUs. Radiometers are not always accurate to match the manufacturer’s stated output, but they are consistent enough to compare one light to another.
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The ANSI/ADA (American National Standard Institute/American Dental Association) for LED curing lights can be purchased through the ADA website.24

  1. Krämer N, Lohbauer U, García-Godoy F, Frankenberger R. Light curing of resin-based composites in the LED era. Am J Dent.2008 Jun;21(3):135-42.
  2. Jandt KD, Mills RW. A brief history of LED photopolymerization. Dent Mater 2013;29(6):605-17.
  3. Price RBT. Light curing in dentistry. Dent Clin North Am 2017;61(4):751-78.
  4. Stansbury JW. Curing dental resins and composites by photopolymerization. J Esthet Dent 2000;12(6):300-8.
  5. Fouassier J-P. Photoinitiation, photopolymerization, and photocuring: Fundamentals and applications. Munich: Hanser Publishers; 1995.
  6. Kowalska A, Sokolowski J, Bociong K. The photoinitiators used in resin based dental composite-a review and future perspectives. Polymers (Basel) 2021;13(3).
  7. Francis N, Rajan RR, Kumar V, et al. Effect of irradiance from curing units on the microhardness of composite – a systematic review. Evidence-Based Dentistry 2022.
  8. Habib E, Wang R, Wang Y, Zhu M, Zhu XX. Inorganic fillers for dental resin composites: present and future. ACS Biomater Sci Eng 2016;2(1):1-11.
  9. Megremis SJ, Ong V, Lukic H, Shepelak H. An ADA laboratory evaluation of light-emitting diode curing units. J Am Dent Assoc 2014;145(11):1164-6.
  10. American Dental Association. An ADA laboratory evaluation of light-emitting diode curing lights. ADA Professional Product Review 2014;9(4).
  11. Rueggeberg FA. State-of-the-art: dental photocuring-a review. Dent Mater 2011;27(1):39-52.
  12. Main C, Cummings A, Moseley H, Stephen KW, Gillespie FC. An assessment of new dental ultraviolet sources and u.v.-polymerized fissure sealants. J Oral Rehabil 1983;10(3):215-27.
  13. Eriksen P, Moscato PM, Franks JK, Sliney DH. Optical hazard evaluation of dental curing lights. Community Dent Oral Epidemiol 1987;15(4):197-201.
  14. Ellingson OL, Landry RJ, Bostrom RG. An evaluation of optical radiation emissions from dental visible photopolymerization devices. J Am Dent Assoc 1986;112(1):67-70.
  15. American Dental Association Council on Dental Materials, Instruments, and Equipment. The effects of blue light on the retina and the use of protective filtering glasses.1986 Apr;112(4):533-35.
  16. Shortall AC, Price RB, MacKenzie L, Burke FJ. Guidelines for the selection, use, and maintenance of LED light-curing units – Part II. Br Dent J 2016;221(9):551-54.
  17. Oliveira D, Rocha MG. Dental light-curing-assessing the blue-light hazard. Dent Clin North Am 2022;66(4):537-50.
  18. Fluent MT, Ferracane JL, Mace JG, Shah AR, Price RB. Shedding light on a potential hazard: Dental light-curing units. J Am Dent Assoc 2019;150(12):1051-58.
  19. Price RB, Strassler HE, Price HL, Seth S, Lee CJ. The effectiveness of using a patient simulator to teach light-curing skills. J Am Dent Assoc 2014;145(1):32-43.
  20. American Dental Association. Effective use of dental curing lights: A guide for the dental practitioner. ADA Professional Product Review 2013;8(2):2-12.
  21. Kirkpatrick SJ. A primer on radiometry. Dent Mater 2005;21(1):21-6.
  22. U.S. Food and Drug Administration. How to study and market your device., Accessed March 23, 2023.
  23. U.S. Food & Drug Administration. Guidance document: Dental curing lights-Premarket Notification., Accessed March 23, 2023.
  24. ANSI/ADA. Curing lights (Powered polymerization activators). ANSI/ADA Standard No.48:2020.
  25. U.S. Food & Drug Administration.21 CFR 807.97 Misbranding by reference to premarket notification., Accessed March 23, 2023.
  26. Adjodah M, Dental Devices Branch of the CDRH, FDA., Personal Communication. August 17, 2015.
  27. International Commission on Non-Ionizing Radiation Protection (ICNIRP). Guidelines on limits of exposure to incoherent visible and infrared radiation. Health Physics 2013;105(1):74-96.
  28. Lukic H, Megremis SJ. “Blue light” photochemical retinal hazard from dental curing units. The American Association for Dental Research. Ft. Lauderdale, Fla.: American Dental Association; 2018.
  29. Bruzell Roll EM, Jacobsen N, Hensten-Pettersen A. Health hazards associated with curing light in the dental clinic. Clin Oral Investig 2004;8(3):113-7.
  30. Ong VK, Megremis SJ, Shepelak H. Ability of protective filtering devices and shields to block transmission of “blue” light from curing units. Journal of Dental Research 2016;95(Special Issue A).
  31. Price RB, Ferracane JL, Hickel R, Sullivan B. The light-curing unit: An essential piece of dental equipment. Int Dent J 2020.
  32. Bruzell EM, Johnsen B, Aalerud TN, Christensen T. Evaluation of eye protection filters for use with dental curing and bleaching lamps. J Occup Environ Hyg 2007;4(6):432-9.
  33. International Organization for Standardization. Eyewear for protection against intense light sources used on humans and animals for cosmetic and medical applications-Part I: Specifications for products. ISO 12609-1:2013.
  34. Mouhat M, Mercer J, Stangvaltaite L, Ortengren U. Light-curing units used in dentistry: factors associated with heat development-potential risk for patients. Clin Oral Investig 2017;21(5):1687-96.
  35. American Dental Association. Spectral curing lights and evolving product technology: an expert’s buying guide for curing lights. ADA Professional Product Review 2009;4(4):2-16.
  36. Malhotra N, Mala K. Light-curing considerations for resin-based composite materials: a review. Part II. Compend Contin Educ Dent 2010;31(8):584-8, 90-1; quiz 92, 603.
  37. Bagis B, Bagis Y, Ertas E, Ustaomer S. Comparison of the heat generation of light curing units. J Contemp Dent Pract 2008;9(2):65-72.
  38. Elayi CS, Lusher S, Meeks Nyquist JL, et al. Interference between dental electrical devices and pacemakers or defibrillators: results from a prospective clinical study. J Am Dent Assoc 2015;146(2):121-8.
  39. Centers for Disease and Prevention. Guidelines for infection control in dental healthcare settings-2003 (December 19, 2003/Vol.52/No. RR-17).U.S. Department of Health and Human Services 2003., Accessed March 23, 2023.
  40. Centers for Disease Control and Prevention. Summary of infection prevention practices in dental settings: Basic expectations for safe care. Atlanta: Centers for Disease Control and Prevention, 2016., Accessed March 23, 2023.
  41. U.S. Food and Drug Administration. MedWatch: The FDA Safety Information and Adverse Event Reporting Program., Accessed March 23, 2023.
  42. American Dental Association. The FDA, medical recalls and reporting adverse events. ADA Professional Product Review 2014;9(4):6-8.

Prepared by: Department of Scientific Information, Evidence Synthesis & Translation Research, ADA Science and Research Institute Last Updated: March 27, 2023 Disclaimer Content on this Oral Health Topic page is for informational purposes only. Content is neither intended to nor does it establish a standard of care or the official policy or position of the ADA; and is not a substitute for professional judgment, advice, diagnosis, or treatment.

Why is Emax better?

Providing Strength – Restoring a natural chewing motion is one of the major functions of a crown. In the past, existing crowns have chipped or cracked just with regular chewing. Therefore, the strength of the material used for a crown is important. An E-max crown is crafted from lithium disilicate ceramic, which resists cracking.

What country is Ivoclar from?

Founded in Zurich, Switzerland, in 1923, our company has been domiciled in the Principality of Liechtenstein since the 1930s. We opened our first international subsidiary in Germany in 1954.

Is Emax better than zirconium?

Should You Choose an Emax or Zirconium finish? – The choice between these two materials will depend on your preferences and the tooth’s location in your mouth. In terms of strength, both Emax and Zirconium are durable. However, Zirconium is resistant to wear and tear – highly durable and stronger than Emax. Zirconium is the better option for restoring a darker tooth located underneath because it does not allow a lot of light to shine through. Suitable for patients with metal allergies or who would prefer metal-free restorations. E-max has a better light transmission and transparency, making it more appealing to those who are conscious of aesthetics. Emax Veneers allow more light to shine through, giving your teeth a more natural look. E-max possesses excellent strength and are fracture-resistant and prepared in thin sections. (>0.3mm) This ensures not only optimal aesthetics but also requires minimal removal of natural tooth structure during preparation. It also provides multiple options for Teeth Restoration – the best thing about the E-max system is that it does not limit to all-ceramic crowns only. Rather, this system can also be use to fabricate veneers, inlays, overlays, and even short-span bridges to replace front teeth.

Is Emax a brand?

EMAX- A Type of Aesthetic Crown – Braeside Dental Centre

Porcelain fused to a Metal Crown (Tooth coloured crown with a metal base) Full Gold Crown Zirconia layered crown (full tooth coloured crown) Zirconia full contoured crown (full tooth coloured crown) EMAX Crown (full tooth coloured crown and the topic of discussion today) Feldspathic Veneer Composite Crown (plastic crown)

The difficult question, for patients and dentists alike due to the overwhelming number of possibilities, is: Which restoration fits my needs the best? For this blog post, I would like to talk about EMAX crowns/veneers. EMAX is a brand name from Ivoclar Vivadent, not a specific restoration. It’s made out of lithium disilicate and zirconium oxide (Zn).

What is the price of Emax Ceram?

IPS EMAX CERAM Dentine A3 (20g) from Ivoclar – Characteristics of the IPS EMAX CERAM Dentine

IPS EMAX CERAM dentine A1 IPS EMAX CERAM dentine A2 IPS EMAX CERAM dentine A3 IPS EMAX CERAM dentine A3.5 IPS EMAX CERAM dentine A4 IPS EMAX CERAM dentine B1 IPS EMAX CERAM dentine B2 IPS EMAX CERAM dentine B3 IPS EMAX CERAM dentine B4 IPS EMAX CERAM dentine C1 IPS EMAX CERAM dentine C2 IPS EMAX CERAM dentine C3 IPS EMAX CERAM dentine C4 IPS EMAX CERAM dentine D2 IPS EMAX CERAM dentine D3 IPS EMAX CERAM dentine D4

Product information:

Manufacturer: Ivoclar Contents: 20g

images_hash: a:1: Product on offer at price of 49.15 EUR

What is Ivoclar Vivadent used for?

Ivoclar Vivadent | Using Ivocap Injection Technology – Ivoclar has created a system that compensates for shrinkage while processing the denture base, This Ivocap injection technology is now considered the state-of-the-art system in denture processing, and we’re thrilled with the results.

What is the price of Ivoclar composite syringe?

Product Image –

What is the warranty on Ivoclar curing lights?

Bluephase Style 100-240V | Curing Lights & Amalgamators | Ivoclar Vivadent US Description Description Bluephase Style is a cordless high-performance LED polymerization light with an intensity of 1,100 mW/cm2. Its lightweight and ergonomic design make it suitable for all hands. Advantages:

Polywave LED featuring “halogen-like” broadband spectrum of 385-515nm suitable for curing all dental materials Unrestricted use without clinical limitations “Click & Cure” corded back-up power supply, independent of the battery. Cordless design for ultimate portability Seamless construction of the housing for optimum hygiene Innovative movement sensor for immediate operation 3-year warranty (1-year warranty for battery) Ergonomic shape to fit the hands of men and women High light intensity of 1,100 mW/cm2 Easy operation due to intuitive 2-button operation Large treatment field due to 10-mm light probe Shortened light probe tip: all tooth surfaces can be easily reached, eliminating the need for extreme opening of the mouth Inductive charger enabling contactless charging of battery

Delivery Forms:

Bluephase Style (Grey) 100 – 240 V Bluephase Style (Blue) 100 – 240 V Bluephase Style (Pink) 100 – 240 V

Images & Videos IMAGES Videos Ratings & Reviews (0) : Bluephase Style 100-240V | Curing Lights & Amalgamators | Ivoclar Vivadent US

What are Ivoclar dentures made from?

Ivotion combines a proven highly cross-linked PMMA tooth material with a premium denture base material. The tooth and gingiva materials developed for Ivotion are the result of intensive research work. They build on combinations of established and clinically proven products.

How long does light curing composite resin take?

Compared to earlier recommendations, curing time for 2 mm resin composite layers can be limited to 20 seconds, when the restorative is not more than 6 mm away from the light tip.