It may take three or more appointments to finish the treatment

可能需要预约治疗3次或多一些就可以完成治疗。

If that's what has to be done to save the tooth, please go ahead. I don't want to lose it.

假如保住牙齿需要这样做的话，那就做吧，我不想失掉这颗牙齿。

That's a very wise decision.

你的决定是明智的。

There are also other things you should know before I begin.

在我开始治疗之前还有些事你是需要知道的。

A tooth with a root canal filling isn't as strong as an ordinary tooth.

牙管填补过的牙齿并不像普通牙齿那么结实，

It incomes brittle2, and the tooth enamel3 is more likely to fracture.

而是变得脆了，牙釉质变得容易碎裂。

Has this happened to my tooth?

我的这颗牙齿是不是到了这种地步？

A large Part of your tooth has already been lost because of decay.

你这颗牙齿大部分已经因为龋坏的关系脱落了。

It will be necessary to make a gold crown for the tooth to give it strength.

需要在这颗牙齿上面镶上金子，用以加强它。

It will also be necessary to insert a gold post (dowel) into the tooth.

还要在牙齿里面嵌入金钉。

Why do you put a gold post into my tooth?

为什么在我的牙齿里面要塞入金钉？

The gold post will build up enough of the tooth to hold the gold crown securely.

有了金钉就可以把金牙冠支持住，安全得多。

This plastic model will show you how it will be done.

看这个塑料模型就知道怎么个做法。

Is there anything else I should know about this treatment?

有关这次治疗方面我还该懂得些什么？

There's one more thing that you should know. Sometimes endodontic treatment isn't successful.

还有一点你是该知道的，有时牙髓疗法并不成功。

With the best possible treatment, the tooth may become infected again.

就算尽量把它治好，也有再次受到感染的可能。

I wouldn't worry about it. Chances for success are better than 95%.

可是我并不担心，因为城的机会占95%以上。

Maybe it would be better to extract the tooth.

可能还是拔了好些。

I can't make this decision for you. You'll have to decide for yourself.

我不能替你决定，要靠你自己决定。

I don't know which is better. What do you recommend?

我不知道拔还是不拔好。你出主意吧。

I don't recommend extraction.

我不主张拔，

You should do everything possible to save the tooth. If the tooth is extracted a bridge will be needed.

应当想尽办法把牙齿保住。假如拔了牙就要做上一个桥。

What does that entail4?

那需要些什么？

Gold crowns would have to be made for the teeth next to the space to hold the bridge.

在间隙两边的牙齿上必须做上金牙冠，用来支撑住桥。

It would be necessary to "grind down" the size of these abutment teeth to prepare them for crowns.

需要将作桥墩的牙磨掉一些，准备套上金牙冠。

A bridge would be very expensive. I don't think that it's necessary.

做桥很花钱，我想没有必要。

I'll take your advice, Doctor. Please try to save the tooth.

我听你的意见。那么请你尽量把牙齿保住吧。

I have a root canal filling in one of my teeth. The tooth is changing color. Can anything be done about it?

我有一颗牙在牙根管里补过。现在这颗牙变了颜色，有什么办法可以解决？

Sometimes a tooth with a root canal filling will change color.

牙根管补过的牙有时会变色。

I can treat it by bleaching2 it with superoxol (30%H2O2).

我可以用30%的过氧化氢液来漂白牙齿。

If the crown of the tooth is weak it would be better to make a porcelain3, acrylic, or ceramic4 crown.

假如牙冠薄弱，那么还是做上瓷的、透明合成树脂的或者是烤瓷的牙冠。

If the crown of the tooth is strong, I'd rather bleach1 it. Bleaching a tooth isn't very difficult.

假如牙齿结实的话，还是漂白好。漂白牙齿并不困难。

根管治疗法.jpg

What is the first step, Doctor?

医生，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补物都挖掉。

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

需要做个橡皮障免得牙龈被烧伤了。

How is the superoxol applied5?

怎样使用30%的过氧化氢液？

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

可以用小棉球将30%的过氧化氢液涂到牙齿上。

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

漂白牙齿要用一种发热的金属器械把热送达牙齿上。

There's no discomfort6 associated with this technique.

进行这种疗法并不会有什么不舒服。

What color does this treatment make the tooth?

治疗完了之后牙齿会变成什么颜色。

The tooth might be a very light color after it's bleached7.

牙齿经过漂白之后会变得十分亮，

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

但是到了一个多星期之后就会变得与正常的牙齿颜色一样。