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牙齒為什麼會變色?由於各種因素:如外傷、齲病等導致牙髓出血,血紅蛋白進入牙本質小管,血紅蛋白氧化變性成為變性血紅蛋白,牙齒外觀表現為棕褐色。牙齒變色影響美觀,可以採取漂白處理或烤瓷冠修復解決美觀問題。
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