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外漂白法适合人群:外源性的着色,即抽烟、喝咖啡、嚼槟榔等引起的牙齿变黄变黑。疼痛指数:几乎不疼。缺点:对四环素牙、氟斑牙等无效,而且效果因人而异,容易反弹。内漂白法适合人群:由于氟斑牙,四环素牙,或者神经坏死的牙齿,特别适合治疗单颗牙齿。疼痛指数:由于要抽去神经,所以剧痛。
External bleaching method for the crowd: exogenous coloring, that is, smoking, drinking coffee, chewing betel nut and other teeth caused by yellowing black. Pain index: almost no pain. Disadvantages: Tetracycline teeth, dental fluorosis and other invalid, and the effect varies, easy to rebound. Bleaching within the law for the crowd: due to dental fluorosis, tetracycline teeth, or nerve necrosis of teeth, particularly suitable for the treatment of a single tooth. Pain index: due to nerves to remove, so the pain.