Zoom Science
Chemistry – The Photo-fenton reaction
Zoom Science
Chemistry – The Photo-fenton reaction
The chemistry of the new Zoom2 gel is based on the “photo-fenton” reaction of peroxide and dissolved iron. This is, in part, the same chemical reaction that causes peroxide to bubble when you put it on a cut on your finger or elsewhere. In the language of chemistry, the reaction of peroxide and iron is:
Fe2++H2O2 ->Fe3++OH- + •OH
In this reaction, the iron ion (Fe2+/ Fe3+) is used up, but it helps to rapidly produce the hydroxyl radical (•OH), which is the real “stain terminator” component of whitening gels.The reaction used in the Zoom system uses this reaction, but then adds a light reaction to prevent the iron ions from being used up:
Fe2++H2O2 ->Fe3++OH- + •OH
Followed quickly by:
Fe3++ light->Fe2++•OH
During this second step the Fe3+ reacts with light to be “renewed” so it can react again,AND it produces another hydroxyl radical in the process. With this “renewing”, the process starts over again. To understand this fully requires a quick lesson in what is known as “Redox” reactions of iron.As everyone knows, iron rusts when it is left exposed to air. The chemical reaction occurring here is known as “oxidation”. Specifically, elemental iron, Fe, reacts with oxygen to become oxidized iron, either Fe2+ or Fe3+. These are known as “oxidative states” of iron. The Fe2+ is “iron 2”,
written as Fe II and is called the “ferrous iron ion”.The Fe3+ is “iron 3”, written as Fe III and is called “ferric iron ion”. Knowing how they are written is not as important as understanding the phrases iron 2 (Fe II) and iron 3 (FeIII) and knowing that they are two different oxidative states of iron. It is the ability of iron to become either of these oxidative states and change from one back to the other that is critical. The ability of iron to go from Fe II to Fe III and back
again is also what lets our blood carry oxygen to our cells and then release it for the cells to use.
Zoom! Advanced Power
A combination of:
o Ongoing product Development work – we worked extensively with optics experts
o Years of cutting edge whitening research
o Maximized Bleaching Potential –
o The Brightest and Most Powerful Chairside Lamp Ever! Nothing whitens better
o A Powerful New proprietary Sodium Free Short Arc Bulb – the highest output of
any chairside system
o Minimal Fadeback
Outstanding Results
Zoom! Advanced Power is a new and superior technology.Clinical studies conducted with patients starting at A3 or
darker resulted in an average shade change of 8 shades in 45 minutes (3 x 15 minute sessions). More importantly
50% of those patients had an ending shade of B1 or better! A similar field test in 10 offices resulted in 60% of
patients reaching ending shades of B1 or better.
A Powerful New Light
DISCUS-NO A PHILIPS COMPANY
Welcome to the new PhilipsOralHealthcare.com, where our goal is to enhance your practice through product solutions that are easy to use, advanced and designed around your patients. For twenty years, Discus has offered advanced solutions for dental professionals to improve patient smiles. Now, Philips and Discus, two pioneers in the oral health industry, have come together to provide dental professionals and consumers with innovative, advanced and holistic solutions that make overall oral healthcare simple and easy. The Philips line of oral healthcare products now combines time-tested solutions with emerging technology, including: • At Home Care:Since 1987, Sonicare has been changing the way people brush their teeth. New this year are the Sonicare DiamondClean power toothbrush and the Sonicare AirFloss, a first-of-its-kind interproximal cleaning device that cleans in-between teeth with a rapid burst of air and water droplets, helping to increase compliance for interproximal cleaning for patients. • Teeth Whitening Treatments: Designed to provide the most effective teeth whitening with the best results, Philips whitening treatments were created for professional use. Now, the comprehensive whitening line offers several solutions including –Philips ZOOM!.
• Oral Hygiene: Philips offers a wide range of solutions for oral hygiene, including
breath management, prophy materials, RX fluorides, sealants and sensitivity
relief. With a wide range of options, Philips oral hygiene products are designed to
open up conversations in the dental office about how patients can manage their
overall oral health between appointments.
PhilipsOralHealthcare.com provides the dental professional with a one-stop portal to the
complete Philips Oral Healthcare product portfolio, enabling professional online ordering
for both Sonicare and Discus customers. We look forward to continuously enhancing this
portal with relevant industry news and information that will assist you in your practice.
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