改锥

• People are damaging their teeth by picking them with household items such as knives , scissors and even screwdrivers . people are damaging their teeth by picking them with household items such as knives , scissors and even screwdrivers
  而英国口腔卫生基金会日前公布的一项调查结果则显示，众多英国人在剔牙时会无所顾忌地“就地取材” ，甚至使用诸如改锥剪刀或耳环等毫不相关的物品来清洁牙齿。