怎样正确地清洁牙齿?
文章来源:未知 文章作者:enread 发布时间:2021-09-10 05:43 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
我们时小候都学过该怎样刷牙。但你知道如何清洁牙齿才最有效吗?每天该什么时候刷牙?是否需要刷够一定的时间,或使用一定的技巧?
 
We all know that cleaning our teeth is important, right? Because, if you don't clean them and things go wrong, they can cause you a lot of pain and discomfort1. We're taught from a young age how to clean our teeth, but the question is – do we all clean our teeth in the same way? Is there a specific time, technique, or duration you should be incorporating into your dental routine?
 
When our milk teeth first appear in our infant years, we are shown, often by our parents, how to clean them – a ritual normally accompanied by some kind of catchy2 song. As we mature, our baby teeth drop out, replaced by adult teeth. And soon it's from trips to the dentists that we get more advice. And that's the issue – when trying to discover the best way to brush your teeth, it feels like there are so many different tips and tricks.
 
University College London (UCL) analysed 66 sources of toothbrushing advice from around the world. The most commonly recommended techniques incorporated circular movements and horizontal brush strokes. However, there were some deviations3. The angle of the brush, use of vertical4 movements and rigorous scrubbing were all variations on brushing advice.
 
And it seems that not one single technique is the standard method – so, if that's the case, how do we know if we're doing it right? Well – there is some standard advice. It seems that brushing for between two to three minutes, two or three times a day, is the best course of action. And if you're one of these people who think it's wise to brush straight after sugary foods to prevent decay, think again. Apparently5, bacteria weaken the enamel6 almost immediately upon eating, so it's wiser to wait for an hour or so before brushing.
 
So, while there is not one standardised technique, most dentists recommend a combination of horizontal and circular movements, lasting7 for between two to three minutes, two or three times a day. Do that, and you might not need too many trips to the dentist.


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1 discomfort cuvxN     
n.不舒服,不安,难过,困难,不方便
参考例句:
  • One has to bear a little discomfort while travelling.旅行中总要忍受一点不便。
  • She turned red with discomfort when the teacher spoke.老师讲话时她不好意思地红着脸。
2 catchy 1wkztn     
adj.易记住的,诡诈的,易使人上当的
参考例句:
  • We need a new slogan.The old one's not catchy enough.我们需要新的口号,旧的不够吸引人。
  • The chorus is very catchy to say the least.副歌部分很容易上口。
3 deviations 02ee50408d4c28684c509a0539908669     
背离,偏离( deviation的名词复数 ); 离经叛道的行为
参考例句:
  • Local deviations depend strongly on the local geometry of the solid matrix. 局部偏离严格地依赖于固体矩阵的局部几何形状。
  • They were a series of tactical day-to-day deviations from White House policy. 它们是一系列策略上一天天摆脱白宫政策的偏向。
4 vertical ZiywU     
adj.垂直的,顶点的,纵向的;n.垂直物,垂直的位置
参考例句:
  • The northern side of the mountain is almost vertical.这座山的北坡几乎是垂直的。
  • Vertical air motions are not measured by this system.垂直气流的运动不用这种系统来测量。
5 apparently tMmyQ     
adv.显然地;表面上,似乎
参考例句:
  • An apparently blind alley leads suddenly into an open space.山穷水尽,豁然开朗。
  • He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
6 enamel jZ4zF     
n.珐琅,搪瓷,瓷釉;(牙齿的)珐琅质
参考例句:
  • I chipped the enamel on my front tooth when I fell over.我跌倒时门牙的珐琅质碰碎了。
  • He collected coloured enamel bowls from Yugoslavia.他藏有来自南斯拉夫的彩色搪瓷碗。
7 lasting IpCz02     
adj.永久的,永恒的;vbl.持续,维持
参考例句:
  • The lasting war debased the value of the dollar.持久的战争使美元贬值。
  • We hope for a lasting settlement of all these troubles.我们希望这些纠纷能获得永久的解决。
TAG标签: advice pain dentists
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