HOME >> MEDICINE >> NEWS
Shedding some light on teeth whiteners

With all of the advertising today about teeth whiteners, surely this is a relatively new miracle of modern science. So just how new? Try the Middle Ages, reports Chemical & Engineering News in its Feb. 10 issue.

The problem with having the treatment in those unenlightened years was that your neighborhood barber-surgeon would file down your teeth and then soak them in a concentrated solution of nitric acid. The procedure would turn them pearly white, all right, but it also destroyed the tooth enamel and led to massive tooth decay, says the weekly magazine, published by the American Chemical Society, the world's largest scientific society.

It may have taken some time, but 21st century dentists with their latex gloves and rubber face masks are using far safer and more effective whitening techniques than their barber-surgeon predecessors. Among their tools are gels, strips and pastes.

The main cause of most tooth discoloration lies just at the surface of the enamel, where red wine, coffee and tea are the culprits, says C&EN. Colored molecules such as tannins and polyphenols, found in these beverages, become absorbed by the enamel's surface. Dark pigments in cigarettes, blueberries and other foods also can be deposited on your tooth enamel. Much of this staining can be brushed away, but over time these compounds can seep into the enamel, where you can't reach them with your brush.

Aging is another major culprit. As we grow older, our teeth gradually turn more yellow. On the other hand, the antibiotic tetracycline can turn children's teeth gray if taken during the early childhood, when tooth enamel has yet to harden completely, C&EN explains. Over time the antibiotic mixes with light and oxygen and gives teeth a grayish-blue tint that's hard to remove. All toothpastes depend on abrasives to scrub stains from the tooth surface. The first "toothpowder," invented in England in the late 1700s, like the first whi
'"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
10-Feb-2003


Page: 1 2

Related medicine news :

1. Study of energy and health in Africa focuses spotlight on charcoal and forest management
2. Other highlights in the March 16 JNCI
3. CAS science spotlight identifies most requested article
4. In solution, tiny magnetic wires scatter light
5. Medical molecules designed to respond to visible light that can penetrate tissue
6. Aircraft cabin ventilation influences the transmission of diseases in-flight
7. Lectures, keynoters, symposia highlight International Dental Research meeting
8. Other highlights in the March 2 JNCI
9. Bacteria collection sheds light on urinary tract infections
10. Two studies find evidence that sunlight may have beneficial influence on cancer
11. Other highlights in the February 2 JNCI

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Shedding some light teeth whiteners

(Date:11/28/2014)... 28, 2014 An inventor and dental assistant ... a patient’s filling and it was almost impossible to reach. ... light," she said. , The patent-pending Access Light allows for ... to areas of the mouth, as well as avoids harm ... safety. Easy to use and clean, it also helps prevent ...
(Date:11/28/2014)... Hamilton, ON Canada (PRWEB) November 28, 2014 ... labels for the stuff kids lose® and an award-winning ... Julie Cole, Julie Ellis, Cynthia Esp, and Tricia Mumby ... Entrepreneur Award. They were recognized with the PROFIT Award ... Cole, Julie Ellis, Cynthia Esp, and Tricia Mumby) accepted ...
(Date:11/28/2014)... A newly released article from Community ... influenza virus that will soon be spreading across the United ... begins with a brief explanation of what the influenza virus ... that children under the age of 5, adults over the ... as heart and lung diseases, asthma, or diabetes, are at ...
(Date:11/28/2014)... Miami, FL (PRWEB) November 28, 2014 Lice ... service areas of its in-home head lice service for ... location in the center of Coral Gables on Pone De-leon ... in Bay Harbor Islands that service Miami-Dade & Broward. ... physical salon in South Florida which has been treating families ...
(Date:11/28/2014)... 28, 2014 "Most of my life, I ... use crutches," said an inventor from Findlay, Ohio. "I thought ... to support my foot, which inspired me to invent this ... a convenient way to support an injured foot. The sling ... eliminates the need for crutches. The design redistributes weight so ...
Breaking Medicine News(10 mins):Health News:Mabel's Labels’ Co-Founders Named A Winner In The 2014 RBC Canadian Women Entrepreneur Awards Program; A Second-Time Win For The Brand 2Health News:Mabel's Labels’ Co-Founders Named A Winner In The 2014 RBC Canadian Women Entrepreneur Awards Program; A Second-Time Win For The Brand 3Health News:How Flu Vaccines Can Impact Families Is Discussed in New Article from Community Health Center of Snohomish County 2Health News:Lice Troopers Lice Removal Service Expands in Miami-Dade 2
(Date:11/26/2014)... November 25, 2014 According ... by Power Source (Electric, Battery, Pneumatic), by Product ... Burr, Cart), by Application (Orthopedic, ENT, Oral, Thoracic, ... MarketsandMarkets, the global Powered Surgical Instruments Market is estimated ... in 2014 and is expected to grow at ...
(Date:11/26/2014)... 2014 Reinforcing its commitment to enabling confident ... PHG AEX: PHIA) today announced 510(k) clearance ... its IQon Spectral CT , presenting an entirely ... adds a new dimension to Computed Tomography (CT) imaging, ... structures based on their material content within a single ...
(Date:11/26/2014)... --  Heska Corporation (NASDAQ: HSKA ) - ... advanced veterinary diagnostic and other specialty veterinary products , ... attend The Benchmark Company, LLC,s Micro Cap Discovery Conference on ... at The Palmer House Hilton, 17 E. Monroe Street, ... p.m. Please email hska@haydenir.com or contact your Benchmark ...
Breaking Medicine Technology:Powered Surgical Instruments Market Worth $2.1 Billion by 2019 2Powered Surgical Instruments Market Worth $2.1 Billion by 2019 3Powered Surgical Instruments Market Worth $2.1 Billion by 2019 4Philips receives FDA 510(k) clearance for IQon Spectral CT 2Philips receives FDA 510(k) clearance for IQon Spectral CT 3Heska to Attend Benchmark Micro Cap Discovery Conference 2
Cached News: