This is the VOA Special English Health Report.
Bad teeth can be painful -- and worse. They can even be deadly.Infectionsof the gums and teeth canreleasebacteria into the blood system. Those bacteria can increase the chances of a heart attack or stroke and worsen the effects of other diseases. And adults are not the only ones at risk.
For example, in two thousand seven, doctors in the Washington area said a boy died when a tooth infection spread to his brain. They said it might have been prevented had he received the dental care he needed. He was twelve years old.
Experts at the National Institutes of Health say good dental care starts at birth. Breast milk, they say, is the best food for the healthy development of teeth. Breast milk can help slow bacterial growth and acid production in the mouth.
But dentists say a baby's gums and early teeth should be cleaned after each feeding. Use a cloth with a little warm water. Do the same if a baby is fed with a bottle. Experts say if you decide to put your baby to sleep with a bottle, only give the child water.
When baby teeth begin to appear, you can clean them with a wet toothbrush. Dentists say it is important to find soft toothbrushes made especially for babies and to use them very gently.
The use of fluoride">fluoride to protect teeth is common in many parts of the world. For example, it is often added to drinking water supplies. Thefluoridemixes withenamel, the hard surface on teeth, to help prevent holes, or cavities, from forming.
But young children often swallow toothpaste when they brush. The American Academy ofPediatricDentistry notes that swallowing fluoridated toothpaste can cause problems. So young children should be carefullysupervisedwhen they brush their teeth. And only a small amount of fluoridated toothpaste, the size of a pea, should be used.
Parents often wonder what effect thumb sucking or sucking on a pacifier might have on their baby's teeth. Dental experts generally agree that this is fine early in life.
The American Academy of Family Physicians says most children stop sucking their thumb by the age of four. If it continues, the group advises parents to talk to their child's dentist or doctor. It could interfere with the correct development of permanent teeth.
Dentists say children should have their first dental visit at least by the time they are one year old. They say babies should be examined when their first teeth appear -- usually at around six months.
And that's the VOA Special English Health Report. You can read, listen and learn English with our programs at voaspecialenglish.com. I'm Karen Leggett.
难点词汇解释
infection [in'fekʃən]
n. 感染;传染;影响;传染病
【例句】
Hand washing can prevent the spread of many infections.
洗手可以防止许多传染病的传播。
release [ri'li:s]
vt. 释放;发射;让与;允许发表
n. 释放;发布;让与
过去式released 过去分词released 现在分词releasing
【例句】
Stress causes the body to release hormones that increase insulin resistance.
压力会导致人体释放增加抗胰岛素的荷尔蒙。
fluoride ['flu(:)əraid]
n. 氟化物
enamel [i'næməl]
n. 搪瓷;珐琅;瓷釉;指甲油
vt. 彩饰;涂以瓷釉
pediatric [,pi:di'ætrik]
adj. 小儿科的
【词组】pediatric psychology 儿科心理学
supervise ['sju:pəvaiz]
vt. 监督,管理;指导
vi. 监督,管理;指导
过去式supervised 过去分词supervised 现在分词supervising
【例句】
To raise, apply and allocate various funds of national railways and supervise their utilizations.
筹集、运用、拨付国家铁路各类资金,并监督使用情况。
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2013-11-25
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