口腔臨床英語對話 第12期:根管治療法(3)

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我有一顆牙在牙根管里補過。現(xiàn)在這顆牙變了顏色，有什么辦法可以解決?

Sometimes a tooth with a root canal filling willchange color.

牙根管補過的牙有時會變色。

I can treat it by bleaching it with superoxol(30%H2O2).

我可以用30%的過氧化氫液來漂白牙齒。

If the crown of the tooth is weak it would be better to make a porcelain, acrylic, or ceramiccrown.

假如牙冠薄弱，那么還是做上瓷的、透明合成樹脂的或者是烤瓷的牙冠。

If the crown of the tooth is strong, I'd rather bleach it. Bleaching a tooth isn't very difficult.

假如牙齒結(jié)實的話，還是漂白好。漂白牙齒并不困難。

What is the first step, Doctor?

醫(yī)生，第一步怎么做?

The first step is to remove all of the old filling.

第一步先把所有的填補物都挖掉。

A rubber dam is needed to prevent the superoxol from burning the gingival.

需要做個橡皮障免得牙齦被燒傷了。

How is the superoxol applied?

怎樣使用30%的過氧化氫液?

The Superoxol is applied to the tooth with a little bit of cotton.

可以用小棉球?qū)?0%的過氧化氫液涂到牙齒上。

The bleaching is done by applying heat to the tooth with a hot metal dental instrument.

漂白牙齒要用一種發(fā)熱的金屬器械把熱送達(dá)牙齒上。

There's no discomfort associated with this technique.

進(jìn)行這種療法并不會有什么不舒服。

What color does this treatment make the tooth?

治療完了之后牙齒會變成什么顏色。

The tooth might be a very light color after it's bleached.

牙齒經(jīng)過漂白之后會變得十分亮，

However, it will change to a normal color in less than one week.

但是到了一個多星期之后就會變得與正常的牙齒顏色一樣。