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PERFECT TEETH


Would you like perfect teeth? Do you want to protect your children's teeth? Two scientific teams are developing liquids which will stop tooth decay; an American team in Boston and a British team in London.
The two treatments are very different though they both identify streptococcus mutans, a microscopic bacterium, as the cause of tooth decay. The bacteria sticks to your teeth and converts sugar into lactic acid. Prof. Hillman, the Americans' chief researcher, has developed GM Mouthwash. The mouthwash contains genetically modified streptococcus mutans so it does not produce lactic acid and therefore does not cause tooth decay. The treatment will cost around $100 and be definitive.
The British team's chief researcher, Professor Kelly, has a different approach: "The bacteria uses a special protein to recognize teeth. We have identified this protein and can stop it." Researchers are testing the liquid for application in toothpastes and mouthwashes.
Both products are still at the development stage and have some problems. The American GM Mouthwash must also overcome public resistance to genetically modified products. The British solution is a natural derivative of the tobacco plant, so this is not a problem, but the effect lasts only three to four months and you must repeat the treatment. Speak Up – edição 220 – setembro/2005

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