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:


(Date:10/13/2017)... ... October 13, 2017 , ... Coveros, a ... has been awarded a contract by the Center for Medicare and Medicaid Services ... accelerate the enterprise use of Agile methodologies in a consistent and high value ...
(Date:10/12/2017)... ... October 12, 2017 , ... First Healthcare Compliance (FHC), an ... showcase a range of technology and learning solutions at the 68th Annual American ... to be held October 14–18, 2017 at the Mandalay Bay Resort in Las ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... products to meet the demand of today’s consumer and regulatory authorities worldwide. From ... probiotic experts and tested to meet the highest standard. , These products ...
(Date:10/12/2017)... ... 12, 2017 , ... Asante, a nationally recognized health system ... their existing home health joint venture through an agreement, effective October 1, 2017, ... venture home health company with Asante, delivering clinically integrated care, for the past ...
(Date:10/12/2017)... ... , ... HMP , a leader in healthcare events and education, today announced ... Award for ‘Best B-to-B Healthcare Website.’ Winners were announced during the Eddie & Ozzie ... competition recognizes editorial and design excellence across a range of sectors. This year’s program ...
Breaking Medicine News(10 mins):
(Date:9/18/2017)... KALAMAZOO, Mich. , Sept. 18, 2017 ... , and OptiMed Specialty Pharmacy of Kalamazoo, ... offer a strategic hub service that expedites and streamlines ... personal spirometer, Spiro PD 2.0, and wellness management services.  ... is a medical device used to measure lung function ...
(Date:9/13/2017)... 13, 2017   OrthoAtlanta has been named the ... Host Committee (AFHC) for the 2018 College Football Playoff (CFP) ... at Mercedes-Benz Stadium in Atlanta, Georgia . ... "I,m In" campaign, participating in many activities leading up to, ... ...
(Date:9/12/2017)...  Consumer reviews on the independent review site Consumer Affairs ... company for hearing aids, ranking it higher than Miracle Ear ... ... For Hearing Aids ... online store that provides high performance, state-of-the-art, German-engineered hearing aids directly ...
Breaking Medicine Technology:
Cached News: