频繁游泳，牙面长时间接触化学处理的池水，在牙面形成棕色沉积物称为游泳世牙石（Swimmer’scalculus，SC）。临床表现在牙面不同位置出现不规则牙石沉积，呈黄色和棕黑色，多出现在前牙唇面和丢面，并伴有牙龈炙。SC与使用洗必太和其它漱口液引起的牙面染色有相似之处，应加 Frequent swimming, tooth surface exposure to chemical treatment of water for a long time, the formation of brown deposits on the tooth surface known as the swimming stone (Swimmer'scalculus, SC). Clinical manifestations of irregular dental deposits in different locations of the tooth surface, yellow and brown, mostly in the front lip and face loss, accompanied by gingival sunburn. SC and the use of chlorhexidine and other mouthwash caused by tooth staining similarities should be added