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什麽是牙冠(套)為什麽需要戴牙冠(套)

Posted By vickong pun     July 11, 2021    

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什麽是牙冠(套)為什麽需要戴牙冠(套)


    



    什麽是牙冠(套)為什麽需要戴牙冠(套)



    牙冠(套是覆蓋在牙齒表面,保護患牙的一種修複體。根據其材料的不同,通常用的有烤瓷和全瓷冠(套)兩種。

    牙冠(套)一般用于死髓牙,即牙齒壞得深而大、已到了牙神經且經過牙髓治療後的牙,這類牙因無營養供應,質地失水變脆,類似于落下來的枯樹枝,很容易劈裂,所以需要戴牙冠(套),保護牙齒並恢複缺損的部分。

    牙冠(套)也可用于活髓牙,這類牙雖不易劈裂,但由于咀嚼時酸痛或食物嵌塞、補牙材料容易脫落等原因,也需要冠(套)。

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