Days of Painful Tooth Repair May Be Over

09/02/2015

00:00 / 00:00
复读宝 RABC v8.0beta 复读机按钮使用说明
播放/暂停
停止
播放时:倒退3秒/复读时:回退AB段
播放时:快进3秒/复读时:前进AB段
拖动:改变速度/点击:恢复正常速度1.0
拖动改变复读暂停时间
点击:复读最近5秒/拖动:改变复读次数
设置A点
设置B点
取消复读并清除AB点
播放一行
停止播放
后退一行
前进一行
复读一行
复读多行
变速复读一行
变速复读多行
LRC
TXT
大字
小字
滚动
全页
1
  • From VOA Learning English, this is the Health & Lifestyle report.
  • 2
  • Many people fear a visit to the dentist.
  • 3
  • They are not so much afraid of the doctor, but of the dental equipment and treatments.
  • 4
  • Well, fear no more!
  • 5
  • A British company says it has developed technology that will end the need for mechanical cleaning of dental cavities.
  • 6
  • It also says the technology speeds up a natural process of toothrepair.
  • 7
  • For over a century, dentists have been repairing cavities the same way.
  • 8
  • They first remove the decayed, or bad, tooth tissue with an electric-powered drill.
  • 9
  • Then, they fill the hole in the bone with a metallic or plastic substance.
  • 10
  • If the cavity is not too deep, the experience can be unpleasant.
  • 11
  • However, if it is deep, near the nerve of the tooth, it can be very painful.
  • 12
  • The worst part is that the process of drilling and filling the cavity has to be repeated for the entire life of that tooth.
  • 13
  • Rebecca Moazzez is a senior lecturer at King's College London.
  • 14
  • She says that this cycle lasts the rest of the tooth's life.
  • 15
  • "You're really in that cycle of repair and replacement for the rest of the tooth's life."
  • 16
  • Tooth enamel is what we see on the outside of the tooth.
  • 17
  • The enamel of a damaged tooth can be replaced naturally.
  • 18
  • This process is called re-mineralization.
  • 19
  • But it is too slow to stop bacteria from building up in small, narrow areas of the enamel.
  • 20
  • A British business called Reminova has developed a method for speeding-up this natural re-mineralization of early-stage cavities.
  • 21
  • Jeff Wright is head of the company.
  • 22
  • "We've just found a way to make that a much faster process.
  • 23
  • Driving healthy calcium and phosphate minerals into your enamel and, through a natural process, it will bind on and add to the enamel that's there."
  • 24
  • The process begins with a cleaning of the cavity.
  • 25
  • This does not require power tools.
  • 26
  • The dentist covers the problem area with a mineral solution, and then uses an electrical current to harden this material.
  • 27
  • The electricity is too weak for the patient to feel.
  • 28
  • And the hardened mineral completely fills the cavity.
  • 29
  • Researchers say this method could be especially useful for children.
  • 30
  • Sometimes children have bad experiences at the dentist.
  • 31
  • They fear the drilling and injections.
  • 32
  • Who wouldn't be afraid Better experiences as a child might lead to more visits to the dentist as an adult.
  • 33
  • Dr. Barry Quinn works as a consultant at King's College.
  • 34
  • "If children have a better experience of going to the dentist,
  • 35
  • so they haven't had the necessary drilling and injections for routine fillings,
  • 36
  • then they'll be much more positive in later life and probably become much more regular patients."
  • 37
  • Dentists say the new method is most efficient on early-stage cavities.
  • 38
  • The whole treatment lasts about as long as a normal drill-and-fill visit.
  • 39
  • Researchers say they believe the new method can be further developed for treating late-stage cavities.
  • 40
  • And they are quick to note that regular cleaning with fluoride toothpaste helps prevent cavities in the first place.
  • 41
  • And that's the Health & Lifestyle report.
  • 42
  • I'm Anna Matteo.
  • 1
  • From VOA Learning English, this is the Health & Lifestyle report.
  • 2
  • Many people fear a visit to the dentist. They are not so much afraid of the doctor, but of the dental equipment and treatments.
  • 3
  • Well, fear no more!
  • 4
  • A British company says it has developed technology that will end the need for mechanical cleaning of dental cavities. It also says the technology speeds up a natural process of toothrepair.
  • 5
  • For over a century, dentists have been repairing cavities the same way. They first remove the decayed, or bad, tooth tissue with an electric-powered drill. Then, they fill the hole in the bone with a metallic or plastic substance.
  • 6
  • If the cavity is not too deep, the experience can be unpleasant. However, if it is deep, near the nerve of the tooth, it can be very painful. The worst part is that the process of drilling and filling the cavity has to be repeated for the entire life of that tooth.
  • 7
  • Rebecca Moazzez is a senior lecturer at King's College London. She says that this cycle lasts the rest of the tooth's life.
  • 8
  • "You're really in that cycle of repair and replacement for the rest of the tooth's life."
  • 9
  • Tooth enamel is what we see on the outside of the tooth. The enamel of a damaged tooth can be replaced naturally. This process is called re-mineralization. But it is too slow to stop bacteria from building up in small, narrow areas of the enamel.
  • 10
  • A British business called Reminova has developed a method for speeding-up this natural re-mineralization of early-stage cavities.
  • 11
  • Jeff Wright is head of the company.
  • 12
  • "We've just found a way to make that a much faster process. Driving healthy calcium and phosphate minerals into your enamel and, through a natural process, it will bind on and add to the enamel that's there."
  • 13
  • The process begins with a cleaning of the cavity. This does not require power tools. The dentist covers the problem area with a mineral solution, and then uses an electrical current to harden this material. The electricity is too weak for the patient to feel. And the hardened mineral completely fills the cavity.
  • 14
  • Researchers say this method could be especially useful for children. Sometimes children have bad experiences at the dentist. They fear the drilling and injections. Who wouldn't be afraid Better experiences as a child might lead to more visits to the dentist as an adult.
  • 15
  • Dr. Barry Quinn works as a consultant at King's College.
  • 16
  • "If children have a better experience of going to the dentist, so they haven't had the necessary drilling and injections for routine fillings, then they'll be much more positive in later life and probably become much more regular patients."
  • 17
  • Dentists say the new method is most efficient on early-stage cavities. The whole treatment lasts about as long as a normal drill-and-fill visit. Researchers say they believe the new method can be further developed for treating late-stage cavities.
  • 18
  • And they are quick to note that regular cleaning with fluoride toothpaste helps prevent cavities in the first place.
  • 19
  • And that's the Health & Lifestyle report.
  • 20
  • I'm Anna Matteo.
  • 21
  • George Putic reported this story for VOA. Anna Matteo adapted it for Learning English. George Grow was the editor.
  • 22
  • ______________________________________________________________
  • 23
  • Words in This Story
  • 24
  • dental cavity - n. a small hole formed in a tooth by decay
  • 25
  • enamel - n. the very hard outer layer of a tooth
  • 26
  • drill - n. a tool used for making holes in hard substances
  • 27
  • injection - n. the act or process of forcing a liquid medicine or drug into someone or something by using a special needle
  • 28
  • filling -- n. material that is used to fill something : example: a filling for a tooth
  • 29
  • calcium - n. a substance that is found in most plants and animals and that is especially important in people for strong healthy teeth and bones
  • 30
  • phosphate - n. chemistry : a salt or compound that has phosphorus in it and that is used especially in products (called fertilizers) that help plants grow
  • 31
  • fluoride - n. a chemical that is sometimes added to drinking water and toothpaste to help keep teeth healthy