|
| Andhra Pradesh ~ India ~ International ~ City ~ Entertainment ~ Business ~ Bullion ~ Forex ~ Sports ~ Technology ~ Health ~ Features |
| Lung Cancer ~ Lung Cancer ~ Breast Cancer ~ Heart attack ~ All Health Topics |
|
Home
/ Health News / 2007 / November 2007 / November 26, 2007 Heres the formula for a perfect smile |
Hugh Jackman drops out of 3-D musical Cleo
Steven Soderbergh plans rock n roll 3D musical about Cleopatra
Structure of key breast cancer target enzyme unraveled
A researcher at Hauptman-Woodward Medical Research Institute has moved a step closer to a cure, and possibly the prevention, of the most common type of breast cancer. ANI
Smoking claimed 673,000 Chinese lives in 2005
A multinational research team, led by scientists at Tulane University School of Public Health and Tropical Medicine, has lent more force to the suggestion that smoking is a significant risk factor for mortality and disease. ANI
Genetic mutations can predict childhood leukaemia relapse
A collaborative study by American researchers has revealed that changes in a gene called IKAROS can help predict a high likelihood of relapse in children with acute lymphoblastic leukaemia (ALL). ANI
A perfect smile depends not only upon the whiteness of a persons teeth but a number of other factors also, say scientists.
London, November 26 : A perfect smile depends not only upon the whiteness of a person's teeth but a number of other factors also, say scientists.
Dr Nicholas Davis of Loma Linda University School of Dentistry in Southern California says that right size and width of each tooth, right curve, colour and shape of the teeth, and the overall width of the mouth are the factors which together contribute to a lovable smile.
He feels that the whiteness of the teeth should match the whites of the eyes, else the smile will stand out too much and detract from the rest of the face. "One of the first things about a smile people notice is the colour," the Daily Mail quoted Dr Davis, as saying.
"People are bleaching their teeth and many times they do it beyond what is natural. The teeth should be the same colour as the whites of your eyes. If the teeth are too white, they become more dominant than the eyes," he added.
Describing his formula for a perfect smile in the journal Dental Clinics of North America, Dr. Davis said that the ideal width of a smile should not be less than half the width of the face, and both upper and lower lips should be symmetrical each side of the mid-line of the face.
He says that the top row of teeth should be dominant, while very little should be seen of the bottom row.
Dr. Davis also says that all the teeth on display should be straight, and there should not appear any signs of restoration work.
His report further suggests that the teeth's size should decrease from front to back.
While the width of the central teeth should be 80 per cent of their height, the laterals should be 61.8 per cent the size of the bigger teeth.
The visibility of gums should be as little as possible to avoid a horsy smile.
Dr. Oliver Harman, a London-based dentist whose clients include Catherine Zeta-Jones, recommends regular 'mouth manicures' to remove stains.
He says that it is not necessary to rectify all imperfections with expensive cosmetic dentistry.
ANI
