He says they actually use dental floss to slowly saw away at the metal, adding tooth powder to increase the friction.

但是犯人们总能找到办法弄到。现在他们用牙线慢慢钜金属，抹上牙粉增加摩擦力。

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Dental amalgams, the silver-colored material used to fill teeth after removal of a cavity, include liquid mercury and a powder that contains silver, tin, copper, zinc, and other metals.

银色的汞合金在牙科中被用于填充牙齿患病后残留的腔洞，合金包括液态的汞和粉末状的银、锡、铜、锌以及其他金属。

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Through its special metal porcelain dental materials and dental porcelain powder to help, have been sealed in a similar way dental crown on top, and then play a role in protecting root dentin.

烤瓷牙通过其特殊金属材料和牙瓷粉的帮助，已牙冠似的方式密封于牙齿之上，进而起到保护牙本质牙根的作用。

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