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10 Dental Tribune Middle East & Africa Edition | May - June 2014clinical > Page 11 LED Ultracapacitor Curing Light System DON’T CHANGE BATTERIES, CHANGE CURING LIGHTS! The Kerr Demi™ Ultra LED Ultracapacitor Curing Light System represents the latest technological advancement in dental curing from the Kerr Demi brand. It is the first curing light to free dentists from both batteries and cords, while offering the unmatched performance and reliability of a Demetron curing light. The Demi Ultra is powered by the revolutionary U40-™ Ultracapacitor – exclusive technology that re-energizes to full power in just 40 seconds, for incomparable convenience. Proprietary C.U.R.E. Technology™ allows the Demi Ultra to rapidly deliver a uniform depth of cure with industry leading low temperatures, and the Easy Suite feature set combines simple and intuitive operation with worry-free cleaning. A new after sales service gives you the peace of mind to know your investment and budget are protected from the hassles of unexpected repair expenses. Demi Ultra is a quantum leap in curing light technology! NO BATTERY, NO CORD, NO EQUAL REVOLUTIONARY U40-™ ULTRACAPACITOR PROPRIETARY C.U.R.E.™ TECHNOLOGY EASY SUITE FEATURE SET AFTER SALES SERVICE√ √ √ √ Order information: Demi™ Ultra LED Ultracapacitor Curing Light System Item nr 35664 Contains: 1 x handpiece, 1 x 8 mm light attachment, 1 x charging dock with radiometer, 1 x power supply, 1 x protective light shield, 1 x hardness disk kit, 1 x -5pack disposable barrier bag, 1 x IFU Accessories Item nr 35665 Demi Ultra LED Light Attachment 8mm Item nr 35666 Demi Ultra Charging dock with built-in radiometer Item nr 35667 Demi Ultra Handpiece Item nr 35668 Demi Ultra Light Shield Item nr 35815 Demi Ultra Power Supply Item nr 35837 Disposable Hardness Disk Kit (pack of 1) Item nr 21042 Optics Maintenance Kit Item nr PEDEMIULTRA100 -Demi Ultra Barrier Bag (pack of 100) Clinical Tips: Demi™ Ultra and C.U.R.E™ Technology: (Curing Uniformity & Reduced Energy) what this brings versus competition? ByKerr C .U.R.E.™ Technology 1. COLLIMATION: colli- mated light is light with rays are parallel, and therefore wil spread slowly as it propa- gates. The word is related to «collinear» and implies light that does not disperse with distance. A better collimation translates in more curing pow- er and a less sensitivity to tip positioning. 2. DEPTH OF CURE: according to the JADA, %37 of all com- posite restorations are insuffi- ciently cured (Fan et al, 2002). Demi Ultra, compared to other lights, guarantees, in addition to an optimal curing uniform- ity, the best depth of cure. C.U.R.E.™ Technology 1. TIP TEMPERATURE: an in- crease of °5.5C can cause irre- versible damages to pulp. ThankstoitsproprietaryC.U.R.E technology, Demi Ultra is able to maintain low temperatures avoiding any tissue damage. Universal curing? Seems to be a compromise. Light and quality of cure. The photopolymerization pro- cess of dimethacrylate-based dental resins is a reaction trig- gered by free radicals, which are generated by irradiation of a light-sensitive initiator and open the double bond of methacrylate groups (C=C), generating a chain reaction. The depth of cure can settle by playing on light intensity (or ir- radiance), wavelength and con- centration and/or type of light initiators. Curing Lights with violet LED to cure alternative photoinitiators provide non-uniform beam irra- diance that leads to non-uniform cure. The power is distributed inefficiently and additional en- ergy is needed to cure in depth. This unnecessary energy in- creases the heat and the risk of pulpal damages. A non–uniform beam also pe- nalized the irradiance when in- creasing the tip distance as can be seen in the graph. In dental composites, the most commonly used photoinitia- tor system is a combination of camphorquinone and tertiary amines (CQ/Amine). Other materials are blends of CQ and other photoinitiators. Collimation Comparison1 1 Collimation as measured by the angle of beam divergence. Source: Dental Advisor, R. Yapp, May 2013! *Used 3 second safety delay between multiple cures As the angle decreased from perpendicular, there’s a significant drop in intensity! which results in a slight decrease in depth of cure. Demi Ultra, thanks to its °60C angle makes easy the access to the posterior area and the curing phase more confortable for the patient.