via: http://resourcesforacesurvivors.tumblr.com/post/97062650390/vaginismusandsexuality-selfcareafterrape

如何刷牙

过年期间炖了些羊骨羊肉，想暖身子来着，没想连吃几炖，牙床肿起个大包，它邻近的那颗牙疼得够呛，寻思是上了火，喝绿豆汤吃黄瓜败火却都无济于事，疼得不行，心想是不是有牙洞啊，终于头一回去看了牙医。

拍了X光片，一通检查完大夫说你的牙啥问题都没有，应当是牙周发炎了。给开了些漱口水抗生素就把我打发回家了。漱口水说会让牙齿变色，大夫虽然叮嘱了我说不用担心，俺这爱臭美的还是没怎么敢用。抗生素吃了两天，终于开始好转，以后就把这事儿忘了。

后来和人写Email聊天突然想起来大夫给我做的如何刷牙的科普了，觉得有益，决定写下来。下面是英文的，因为朋友是老美，就先敲了英文。现在让我把它再用中文敲一遍。基本都是从我这位从医二三十年的牙医同志那里听来的。这里有牙医童鞋，尤其是美女牙医，有不对之处请一定担待。也还望做出指正，先谢！


基本上说如果方法正确，每天刷牙两次用牙线一次几乎就可以不用再看牙医了。

牙的健康取决于牙本身和下面支撑牙的牙床，缺一不可。这两样都可能被食物中的酸，细菌等侵害。

所以刷牙和牙线的目的就是去掉牙和牙周上的食物残渣，使它们不能转换成酸等坏东东。牙大家都知道就不解释了，牙周要解释一下，就是包着牙的那圈。

牙周和牙之间在交接线往下有两毫米左右的缝隙，不是在交接线那儿就真交接到一起了。就这圈缝隙就是藏污纳垢的地界儿。以前刷牙不敢太深觉得会刷进牙床的肉里，怕疼，实际刷牙是一定要清洗这个缝隙的，也就是要往交接线下再深两毫米左右。交界线往上那就是白白的牙，往下那可是基本看不到的，就是这个缝隙。

怎么刷对呢？牙刷用力给不同的角度是可以刷到牙前面和后面的缝隙里的，就是牙侧面刷不到。这时就需要牙线。左边一颗牙右边一颗牙，牙线也是要这两颗牙侧面的缝隙都要照顾到，所以一个牙缝两个用力方向，才可以把左右两颗牙的侧面缝隙都清理到。

看到出血不要担心。如果牙周健康，刷牙或用牙线都不会出血。出血就是它不健康，不健康就是不够干净，就赶紧清理，等干净了，就不出血了。

每天最最重要的刷牙和用牙线时间就是晚上睡觉前，因为一夜功夫食物残渣里的啥坏东东都可能出来。相比之下，白天是不是吃完东西一会儿就刷牙还真不那么重要。

多喝水也有帮助。少吃甜食那就更加了。俺这么多年就看了这一次牙医大概可能也许基本就是因了这两条。

祝你一直牙口好，吃嘛嘛香 :)



How to brush your teeth

I recently went to see a dentist, it's the first time that I go see one. Here are some lessons that I learned from him. I am sharing them with you. Hope you have healthy teeth.

Brushing teeth twice a day and flossing once a day may essentially eliminate the need for dentists, provided that the brushing and flossing techniques are correct.

Basically the health of teeth is determined by the teeth themselves and the gum etc. supporting the teeth. Both can be compromised by acid, bacteria, etc.

So brushing and flossing need to be done in a way to remove all food particles and residues from both the teeth and the gum. The gum here really means the gap between a tooth and the gum surrounding the tooth.

This gap usually has ~2mm open area on top, which is invisible but can store a lot of food particles. Brushing with right angles can reach this area at the front and back of a tooth, while flossing is needed for this area at two sides of a tooth. Therefore the flossing must reach into this gap on both sides of a tooth, in order to be effective.

Do not be afraid of reaching into the gap. If your gum is healthy, it shoud not bleed. If it bleeds, it's not healthy, keep flossing. Once it becomes healthy, the bleeding will stop.

The most important brushing/flossing is the one before bed-time. During the day, whether to brush/floss right after meals/food is not as important.

Drinking more water and eating fewer sweets would also help.