Unverified88% confidenceCautionTime unknown
美白效果对外源性染色（咖啡、茶渍、烟渍）相对明显，对内源性变色（四环素牙、氟斑牙）效果有限甚至无效
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
Related Entities
Related Claims
Unverified对四环素牙、氟斑牙等内源性着色基本无效，仅对外源性色素（咖啡、茶渍、烟渍）有一定改善作用90% similarUnverified美白效果属于渐进式，对外源性轻度茶渍咖啡渍有一定改善，但对四环素牙、氟斑牙等内源性着色基本无效89% similarUnverified对茶渍、咖啡渍等外源性色素有一定去除效果，但对四环素牙、氟斑牙等内源性着色基本无效88% similarUnverified美白效果偏温和，主要针对日常茶渍咖啡渍的浅层去除，对四环素牙、氟斑牙等内源性着色基本无效86% similarUnverified活性炭的吸附增白只对外源性色素（茶渍、烟渍、咖啡渍）有效，对四环素牙、氟斑牙等内源性变色完全无效，这类情况应选冷光美白或贴面而非牙膏84% similar
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