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52 分钟
朝“问”健康丨牙竟然不是老掉的!关于牙齿健康,这些要知道
医生介绍,儿童在六岁左右会长出第一颗恒磨牙,位于乳磨牙后方,上下左右各有一颗,称为“六龄齿”。“六龄齿”表面窝沟较多,不易彻底清洁,容易发生龋坏。这时候家长应该带孩子去医院做“六龄齿”窝沟封闭,窝沟封闭治疗相当于给“六龄齿”穿了一件“防弹衣”,有效预防龋病的发生。
20 小时
[亚冬会]中国队获得混合团体2000米接力第四名
北京时间2月8日,哈尔滨2025年亚冬会短道速滑混合团体2000米接力决赛展开争夺,韩国队夺得冠军,中国队获得第四名。
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