영엉해석좀부탁드려요..급해요 제발요!!

부탁드려요..2009.05.31
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영어해석좀부탁드려요 과제라서요...한문장마다 끊어서 해석을해오라네요....

 

sealants

 

How does a sealant help prevent decay?

 

A sealant is a plastic material that is usully applied to the chewing surfaces of the

 

back teeth--premolars and molars. This plastic resin bods into the depressions and

 

grooves (pits and fissures) of the chewing surfaces of back teeth. The sealant acts

 

as a barrier, protecting enamel from plaque and acids.

 

Thorough brushing and flossing help remove food particles and plaque from smooth

 

surfaces of teeth. But toothbrush bristle cannot reach all the way into the

 

depressions and grooves to extract food and plaque. Sealants protect these

 

vulnerable areas by "sealing out" plaque and food.

 

 

 

 

 

Is sealant application a complicated procedure?

 

Sealants are easy for your dentist to apply, and it takes only a few minutes to seal

 

each tooth. The teeth that will be sealed are cleand, Then the chewing surfaces

 

are roughened with an acid solution to help the sealant adhere to the tooth. The

 

sealant is then 'painted' onto the tooth enamel, where it bonds directly to the tooth

 

and hardens. Sometimes a special curing light is used to help the sealantharden.

 

As long as the sealant remains intact, the tooth surface will be protected from

 

deacay. sealants hold up well under the force of normal chewing and usually last

 

several years before a reapplication is needed. During your regular dental visits.

 

your dentist will check the condition of the sealants and reapply them when necessary.

 

 

 

 

sealants are just for kids, right?

 

The likelihood of developing pit and fissure decay begins early in life, so children

 

and teeangers are obvious candidates. But adults can benefit from sealants as well.

 

Key ingredients in preventing tooth decay and maintaining a healthy mouth are

 

twice-daily brushing with and ADA-aaccepted fluoride toothpaste; cleaning between

 

the teeth daily with floss or inter dental cleaners; eating a balanced diet and limiting

 

snacks; and visiting your dentist regularly. Ask your dentist about whether sealants

 

can put extra power behind your prevention program.