洗牙出现的这些“不良反应”,你中招了吗
洗牙不仅有助于牙齿美白，而且还能防治某些口腔疾病。但有些人洗牙后会出现一些不适症状，这些不适症状是怎么引起的呢？
Toothwash can not only be good for teeth, but also prevent some oral diseases. But some people have some uncomfortable symptom after it. What cause those uncomfortable symptoms?
洗牙后牙齿对冷热酸甜过敏，这是因为洗牙前牙石附着在牙齿颈部与牙龈交界处，对冷热酸甜能起到缓和作用，当牙石通过洗牙被去除后，牙本质露出来，牙齿遇到刺激后就会出现敏感现象。由于牙齿颈部的结构决定了这个地方的牙骨质很脆弱，洗牙后会出现不同程度的过敏现象。建议洗牙后2-3天内，不要吃过冷、过热、过辣、过酸等刺激性强的食物。
Teeth will be sensitive to feelings of coldness, heat, sour and sweet after toothwash. The reason is simple. Before toothwash the dental calculus attaches on the junction of tooth neck and gingiva, which can slow down the hypersensitivity. But when the dental calculus is removed, the dentine exposes and the teeth will be sensitive. The cementum is fragile due to the structure of tooth neck. So after toothwash there will be hypersensitivity with varying degrees. The editor suggests people avoid to having too cold, hot, spicy and sour food in 2-3 days after toothwash.
洗牙后牙龈出血
牙龈炎患者洗牙后可能会牙龈出血，但一般出血时间较短。如果长时间出血不止应及时到医院检查，以确定是否患有全身性血液疾病。
Patients with gingivitis may have bleeding gum after toothwash. But the bleeding time is short. If people have persist bleeding, they should come to hospital to make sure if they have general blood diseases.
洗牙后牙齿缝隙变大
有的人发现洗牙后牙齿缝隙明显变大了，以为是洗牙时磨损的原有牙齿，其实是因为洗牙前牙垢牙石较多，牙龈长期受牙垢牙石的刺激变得肿胀，牙缝被肿胀的牙龈和牙石填满，感受不到缝隙，而牙垢牙石被清除后，牙龈红肿消退，本来的牙缝露出来了。
Some people find bigger teeth gaps after toothwash and they think it is due to the removed dental tartar. The truth is that gingiva becomes swollen because of the stimulation of dental tartar for a long time. And the teeth gap is filled with swollen gingiva and tartar. So when the dental tartar is cleared away, the swollen gingiva fades away and the original teeth gap exposes.
洗牙后牙齿表面粗糙干涩
洗牙后会感觉牙齿粗糙干涩，有的人担心是洗牙对牙齿造成了损伤，把牙齿表面的牙釉质破坏了。其实是牙齿表面有一层膜，洗牙后这层膜被清除，所以牙齿表面感觉不光滑，随着保护膜再次附着在牙齿表面，这种不适感就会消失。
After toothwash people will feel their teeth rough and dry. They worry that toothwash will cause damage to teeth and destroy the enamel. Actually the rough, dry feeling is because of the protective film’s cleared away. So their teeth is not so smooth. With the attachment of protective film on the teeth again, this discomfortableness will disappear.
许多人误解洗牙会影响牙齿健康，造成牙齿敏感等不良反应，其实定期洗牙也是对牙齿的一种保健方式。不过传统洗牙仅仅重视牙石与异物的清理，对口腔菌群调节等毫无作用。
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Many people think toothwash will influence teeth health and cause sensitivity of teeth. Actually regular toothwash is also one health method to teeth. However, traditional toothwash only emphasizes the clearing of tartar and foreign matter and has no effects to adjust oral flora.
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