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牙垢如不及时清理,经长时间积累会形成黑色的牙石,有的牙石的确是黑色的石粒状。牙石会造成牙龈出血和萎缩。提醒大家刷牙时,注意刷牙齿内侧。

heater (肠子)
(#203639@0)
2001-9-17 -04:00
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Back To Topic: 我左边第四颗牙(从里往外)无缘无故出血。 开始,我以为是牙周炎,吃了些药(功劳去火片)还不见好。哪位知道什末原因。多谢。

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