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(图片来源:soogif)
\n\n\n\n1. 能够刷掉牙菌斑和口气。
\n\n牙菌斑就相当于口腔内的“细菌社区”,汇聚了各种各样的细菌和食物残渣等。
\n\n这些细菌繁殖能力非常强,特别是夜间入睡后,唾液分泌减少,口腔自洁作用差,细菌更容易生长,形成薄薄的一层牙菌斑附着在牙齿的表面[1]。
\n\n\n\n细菌还会分解口腔中残余食物,释放出挥发性硫化物,夜晚又没有唾液冲刷和食物的摩擦,早上的口气就会更重。
\n\n\n\n所以早上起来先刷牙会把这些细菌、口气先刷掉,防止它们和食物一起进入肠胃。
\n\n\n\n2. 帮助牙齿抵抗酸性物质。
\n\n\n\n\n\n细菌会利用食物代谢产生酸,酸会导致蛀牙。早上起来直接刷牙不仅清除了牙菌斑,含氟牙膏还会在牙齿上附着薄薄的氟层,帮助牙齿抵抗酸性物质侵蚀。
\n\n\n\n清除牙菌斑和食物残渣。
\n\n\n\n\n\n我们的牙齿在进食后20分钟左右会再次形成新的菌斑。
\n\n\n\n\n\n并且饭后口腔中留下大量的食物残渣,很容易在口腔环境中腐化、产酸,导致口臭和各类口腔疾病。
\n\n\n\n\n\n所以如果吃完再刷,效率最大化,刷一次就能把各类物质都刷掉,听起来就很赚!
\n\n\n\n\n\n而且吃完饭刷牙会让我们出门时口气清新。不会出现一张口,约会对象就知道你早上吃了韭菜盒子。
\n\n\n\n\n\n两种顺序都有各自的优点,选择哪种都没错,只是看个人习惯,以及自己更注重哪一方面。
\n\n\n\n\n\n不过的确会有部分牙医会更建议饭后再刷牙:早上起来先用温水漱口,吃完早饭后刷牙,避免食物残渣留在口腔内,滋生更多细菌。
\n\n\n\n\n\n除了搞清楚刷牙的时间,知妹还整理了这些常见的刷牙疑虑,一次性都说清楚!
\n\n牙最外面一层叫牙釉质,它是没有神经分布的,在牙体组织完整的情况下,被釉质完整包裹的牙齿遇到热水或冷水并不会有不适的感觉。
\n\n\n\n只是冷水会使刷毛变硬,刷牙时机械强度会增加,对牙齿来说不够温柔[2],所以更建议用温水。
\n\n硬毛虽然清洁力强,但容易损伤牙齿、牙龈,时间一久会导致牙齿磨损、牙龈萎缩。
\n\n所以大家还是尽量选择毛稍软一点的牙刷,呵护牙齿。
\n\n\n\n竖着!
\n\n刷牙不是锯木头,横着刷容易刷出一条“深沟”导致牙齿敏感,遇到冷热刺激那酸爽……
\n\n刷牙要用正确方式刷够三分钟,长时间敷衍会使得沉积在牙齿上的牙菌斑很难清理干净甚至变成牙结石,久而久之引起蛀牙和牙龈发炎。
\n\n都可以。
\n\n沾水是希望牙膏中的发泡剂更容易起泡沫,使牙菌斑被软化更容易被清理掉。
\n\n但不沾水效果也没有差别很大。不过个别脱敏牙膏不能沾水。
\n\n看完这些是不是觉得刷牙好麻烦?其实做起来很简单,想要正确刷牙,记住以下几点就可以了!
\n\n\n\n每天至少要刷牙两次,晚上睡前刷牙更重要。
\n\n吃完饭也可以漱口,去除食物残渣。但注意使用了漱口水也不能代替刷牙哦。
\n\n\n\n牙刷选择小头、软毛牙刷,以便在口腔中自由活动,又不损害牙齿。
\n\n牙膏使用含氟牙膏。氟不但能防止牙齿表面溶解,还可以使已经溶解的表面重新坚固。
\n\n有传闻说含氟牙膏用多会中毒,其实牙膏中的氟剂量远远达不到中毒标准。
\n\n当然如果有特殊需求比如牙齿敏感,那可以根据医生意见选择专业牙膏。
\n\n成人刷一次牙,挤出1厘米的牙膏就行。
\n\n牙齿表面、内侧、咬合处,舌苔都要照顾到。
\n\n巴氏刷牙改良法,具体操作如下:
\n\n \n\n\n\n审稿专家:景泉 | 北京协和医院口腔科主任医师
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