外伤会导致牙神经坏死吗

来自杨鸣良医生的专业解答，快打开看看是否又获得了新的知识点～

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美咯

病情分析：一般情况下牙齿如果出现了坏死的情况，那么它是没有什么疼痛感的，因为神经已经被杀死了，或者视神经萎缩了，它就不会出现那种疼痛感，那么如果牙齿神经已经坏死了，那么牙齿的颜色也会出现改变的，一旦牙齿出现改变，那么就证明神经坏死了。

杨鸣良

副主任医师

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问题描述：前段时间受外伤的撞击，牙齿出现了松动，那么如何才能知道牙齿有没有神经坏死了？