Gû-hêng āu-chan

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Gû-hêng kiū-khí (Hàn-jī: 牛形臼齒, Eng-gí: taurodontism) koh kiò-chò gû-kang-khí (bull tooth), sī khí-kin hun-chhe (dental root furcation) siong-tong chiap-kīn khí-kin ê kin-chiam só·-chāi, tī khí-koan pō·-hūn khí-chhóe-khiuⁿ pí chèng-siông chhùi-khí khah-tōa koh khah-chhim. Ûi-thoân sī chú-iàu ê goân-in, ni-khí kap éng-kiú-khí lóng ē hoat-seng, 1 khí he̍k kúi-nā khí lóng-ū khó-lêng. Gû-hêng kiū-khí tī lîm-chhn̂g siōng kah chèng-siông chhùi-khí sio-siâng, m̄-koh tī lî-hoān Downs syndrome ê hoān-chiá sin--siōng bē-su ū khah-koân ê hoat-seng-lu̍t.