Tooth brushing became popular during the World War I.

第一次世界大战期间，刷牙开始流行起来。

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Stroke-related difficulty in tooth brushing and denture wearing were associated with higher oral yeast carriage(P<0.05).

伴随刷牙困难及佩带活动义齿的中风患者的口腔念珠菌负荷较高（P〈0.05）。

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The investigators made allowances for factors such as age, gender, smoking, alcohol intake, frequency of tooth brushing, blood sugar and cholesterol levels.

研究人员还考虑到了年龄、性别、吸烟、饮酒、刷牙频率、血糖及胆固醇水平等各项因素。

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Regular tooth brushing for cats and dogs reduces the risk for periodontal disease as well as costly dental procedures.

CNN: Pet grooming tools for a less hairy summer

At the same time, Scotland's chief dentist urged parents to ensure their children stuck to a good tooth-brushing routine.

BBC: Scottish children's teeth 'best on record'

Creating routines or even rituals around our work helps in the same way making a routine out of tooth-brushing or taking daily walks helps in everyday living.

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