NHS警告每三个月更换牙刷,以预防感染和口香糖疾病。 NHS warns to replace toothbrushes every three months to prevent infections and gum disease.

国家保健服务系统警告说,牙刷应每三个月更换一次,以避免感染和口香糖病等健康风险。 The NHS warns that toothbrushes should be replaced every three months to avoid health risks like infections and gum disease. 建议使用软膜和电动牙刷,同时每天刷两次两至三分钟,并配有氟化牙膏(1350-1500ppm)。 Using soft bristles and electric toothbrushes is recommended, along with brushing twice daily for two to three minutes with fluoride toothpaste (1350-1500ppm). 刷牙后吐而不冲洗有助于将氟化物留在牙齿上的时间较长。 Spitting but not rinsing after brushing helps keep fluoride on the teeth longer. 适当技术包括以45度角度刷牙,以有效清洗口香糖线。 Proper technique includes brushing at a 45-degree angle to clean the gum line effectively.