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vickong pun
vickong pun
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做烤瓷牙是否需要將牙齒磨得很小？磨牙時疼痛嗎

Posted By vickong pun     July 10, 2021    

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做烤瓷牙是否需要將牙齒磨得很小？磨牙時疼痛嗎


    　



    做烤瓷牙是否需要將牙齒磨得很小？磨牙時疼痛嗎



    做烤瓷牙前需要將患牙磨去一層，其主要目的有兩個：

    一是使牙齒上下寬度相同或下方稍寬，保證冠戴上後與患牙密合；

    二是爲烤瓷冠留出足夠空間，從而保證冠的厚度和強度。磨去的牙齒不足原長度的1/3，一般不會磨到牙神經。如果患牙是死髓牙，磨牙時沒有疼痛；如果是活髓牙，需要在磨牙前進行局部麻醉以保證無痛。

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