Article from the Associated
Press
By ALEX DOMINGUEZ, Associated Press Writer
BALTIMORE - An additive
that provides the minerals used by teeth to rebuild
themselves could find its way into products ranging from
toothpaste to chewing gum, University of Maryland
researchers say.
Calcium and phosphorous
ions found in saliva are used by teeth during the natural
repair process. The additive, named Novamin, provides more
of the ions, which can decrease with age, the researchers
said.
So far, the Novamin, has
been added to several products used by dentists and a
toothpaste sold as a demonstration product by the company
marketing the additive, Alachua, Fla.-based NovamiMIn
Technology Inc., said Randy Scott, the company's president
and chief executive officer.
One of the dental
products treats sensitive teeth. Unlike products that
deaden nerves to make teeth less sensitive, the product
fills in tiny holes that cause the sensitivity, Scott
said.
Other products include a
less abrasive paste for teeth cleaning and a root
conditioner. The company is working with several large
national brands and consumer products containing Novamin
should be on store shelves early next year, Scott said.
"Ultimately, we hope to
see it in toothpaste as a common ingredient. It also could
be incorporated in chewing gum, dental floss, mouth wash,
you think of a dental care product and it could
incorporate Novamin," Scott said.
The additive, one of a
number of advances on display this week at the annual
convention of the International Association for Dental
Research, is a spin-off of research into bone regeneration,
said Dr. Gary Hack, one of the developers of Novamin.
The work is similar to
that of Japanese researchers, who announced earlier this
year that they had developed a synthetic tooth enamel that
can repair early tooth decay without the need for drilling
and fillings. The substance developed by the Japanese
researchers has yet to be made into a product.
Kevin Smith, CEO of Omnii
Pharmaceuticals, which is marketing the sensitivity
product, said it is cheaper and easier to demonstrate to
the FDA (news - web sites) that a new product works on
sensitive teeth than that it helps prevent cavities.
Smith said his company is
hoping to market more products containing additives such
as Novamin. To do that, he is hoping to convince the FDA
that it should allow approval of products for a new
category of treatment — remineralizing teeth to repair a
lesion before it becomes a cavity.
Researchers at the
conference in Baltimore also presented the results of
studies of how stem cells guide tooth formation.
Pamela Yelick of the
Harvard School of Dental Medicine said researchers have
succeeded in transplanting tooth buds in animals and
growing full teeth. Now, they are experimenting with cells
cultured from tooth buds that have been placed on
synthetic substrates and coaxed into developing into tooth
cells.
However, growing new
teeth in humans, she said, "is years away, unfortunately."