In addition, about thirty percent of the city's residents have dentine hypersensitivity, and teeth yellow and tone problem also nots allow to ignore.
此外,约百分之三十的城市居民有牙本质敏感问题,而牙齿偏黄和口气问题也不容忽视。
They are abrasive and can wear your enamel away and in the long-term lead to sensitivity and darkening of your teeth as the enamel wears and the inner amber-coloured dentine becomes visible.
它们都有研磨作用,会磨损牙釉质,长此以往会导致牙齿敏感和发黑,因为牙釉质磨损会暴露出里面黄褐色的牙质。
Dentine hypersensitivity is a sharp, sudden pain arising from the teeth when exposed to touch or hot and cold foods.
象牙质敏感是当牙齿接触或冷或热的食物所引起的急剧的,短暂的疼痛。
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