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Sunday, November 25, 2012

News that'll make your dentist mad

LONDON: VISITS to the dentist are never pleasant. Not only do we have our pearly whites scraped, prodded and drilled, we then have to endure a telling-off for not having flossed.

Dentists insist it will keep our teeth sparkling and free from decay, as well as keeping our gums healthy. Regular flossing has even been said to protect us from heart disease. Yet, for most of us who try wrestling with the tape, it only results in a cricked neck and bleeding gums.

And now, according to a provocative new book, Kiss Your Dentist Goodbye, it seems that dedicated followers of flossing could actually be wasting their time.

The book is causing waves because it's written by United States-based Dr Ellie Phillips, who was among the first women dentists to train at Guy's Hospital here.

She says that flossing -- and that goes for whichever gizmo, gadget or bit of tape you choose to use - will do nothing to reduce your risk of tooth decay.

The science, she says, is on her side. Only one study has shown a benefit, and that involved a group of schoolchildren who did not floss themselves, but instead had their teeth flossed by a hygienist five days a week for two years.

And a study published in the British Dental Journal in 2006 found no difference in the number of cavities suffered by adults who flossed and those who did not.

So is Dr Phillips right? Surprisingly, it seems she may be - but only up to a point.

"In all fairness, there is no evidence that flossing is effective in preventing tooth decay in the long run," says Dr Graham Barnby, a dentist  who is also a member of the Simply Health Advisory Research Panel, which analyses the latest research and medical thinking.

"So in a sense, she does have a point. Yet although the benefits of flossing may be limited with tooth decay, flossing does have a role in the prevention of gum disease."

Tooth decay occurs when acid in the mouth eats away at the teeth. This acid is found in foods, but is mainly produced when bacteria in the mouth "digest" sugar - hence the reason sweets rot our teeth.

Gum disease, on the other hand, is caused by plaque - a film of bacteria on the teeth which, if not removed with brushing, irritates the gums, causing them to bleed and recede.

If left, the plaque hardens into tartar, which irritates the underlying bone of the gums and, in severe cases, can lead to wobbly teeth.

Dr Phillips argues that rather than flossing or using brushes, all you need to do is use three different mouthwashes -- one before brushing, and two after.

People often clean their teeth immediately after eating, yet this can lead to the teeth wearing away  because food softens teeth. - DM

Credit to DM and NST

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