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Scientists say we clean our teeth the wrong way. Researchers from University College, London found that most of the advice that dentists give us is very different. They add that we have been cleaning our teeth the wrong way. The researchers looked at tooth-brushing advice in dental textbooks, toothpaste instructions and dental clinics. They found five different basic ways of tooth-brushing and decided all of them were incorrect. Most of the methods involve moving the toothbrush along the teeth, with the brush moving round and round in small circular movements. The researchers said we should stop doing this and use a back-and-forth movement instead.
科學家稱，我們刷牙的方式是不對的。倫敦大學學院的研究者發現，不同牙醫給我們的建議，差別很大。研究人員稱，我們一直在用錯誤的方法刷牙。研究人員查看了牙科書籍、牙膏說明以及牙科診所的刷牙建議。他們總結了5種不同的基本的刷牙方式，而且認定這5種方式都是錯誤的。大多數方法包括刷牙時沿著牙齒，而且刷牙的時候要用牙刷做微小的圓周動作。研究人員稱，我們應該停止這種刷牙方式，而是采用上下運動的刷牙方法。
Aubrey Sheilam, lead author of the study and professor of dental public health, said: "The public needs to have sound information on the best method to brush their teeth." The research suggests not brushing teeth too much. More than twice a day damages the enamel on the teeth. The recommended time for brushing is no longer than three minutes each time. The research also says using too much pressure and brushing your teeth too hard will also damage teeth. Researchers also advised not cleaning your teeth immediately after eating. This is when acid is strongest in your mouth and this acid will damage teeth. A final recommendation was to clean the tongue too because it also has a lot of bacteria.
