首先，假如蛀得太厉害了，对于其他牙齿是会感染的，牙齿感染可能会痛，对孩子的全身健康也有害。

First of all, the tooth may become infected if the decay is severe. Infection from a tooth might be painful and harmful to a child's general health.

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在《等离子进展与聚合物》上，研究小组报道称当光焰直接进入受感染的牙齿内部，能够成功地彻底清除已受感染的部位。

The team report in Plasma Processes and Polymers that when the plume was directed into the infected interiors of teeth, it succeeded in clearing up well-established infections completely.

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喝红茶可以防止牙菌斑的形成，还可以杀死感染牙齿的细菌。

Drinking black tea has been found to prevent dental plaque formation and to kill bacteria that infect teeth.

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