Khí-bín
Khí-bín (齒敏) sī the̍h-lâi sé-chhùi lù chhùi-khí ê ke-si. Tī kó·-chá, sè-kài kò-tē tio̍h-ū lâng the̍h chhūi-á ê iù-ki, pō· tī chhùi lâi lù chhùi-khí. Koh-ū the̍h baking soda he̍k chalk lâi tàu lù--ê.
Kīn-kù American Dental Association, tē-1 ki ê khí-bín sī hoat-hiān tī 1498 nî Tang-hong ê China, he sī sú-iōng ti-chiah ê chang-mo· tàu-tī tōng-bu̍t kut-ki chò--ê. Tī Se-hong, ài kàu tē-17 sè-kí chiah chhut-hiān ū khí-bín, kàu tē-19 sè-kí chiah tauh-tauh sî-kiâⁿ--khí-lâi. (Tī Au-chiu, Roma sî-tāi tio̍h-ū khai-sí sú-iōng chho·-pò· lù chhùi-khí ê kì-lo̍k). Tī 1938 nî, DuPont kong-si sú-iōng jîn-kang ha̍p-sêng ê châi-liāu, it-poaⁿ sī nylon, chhú-tāi tōng-bu̍t chang-mo· lâi chè-chō khí-bín. Tē-1 ki nylon chang-mo· ê khí-bīn tī 1938 nî, 2 goe̍h 24 khai-sí chiūⁿ-chhī hoàn-bē.
Tâu-1 ki tiān-tōng khí-bín miâ-kiò Broxodent sī Squibb Pharmaceutical tī 1959 nî American Dental Association ê 100-chiu-nî sî thui-chhut.
Sú-iōng khí-bín sî siang-chāi ē sūn-soah sú-iōng khí-ko, che chí-sī koàn-sì, m̄-sī it-tēng ài-ū.
Chòe-kīn siāng-sin hêng ê khí-bín sī im-pho khí-bín (sonic toothbrush)