The black substance on the root of the tooth cannot be washed off, it may be the tartar deposited on the root of the tooth, tartar is the bacterial mineralization deposited on the tooth surface in the mouth, it will be very closely combined with the tooth surface, using the daily brushing and rinsing method, can not completely remove the tartar. The correct way to remove tartar is to go to the hospital for ultrasonic cleaning treatment, using ultrasonic high-frequency oscillation, with the water spray rinse method, in order to completely remove the tartar and pigment deposits accumulated on the root surface of the teeth, to play the effect of cleaning the tooth surface. If there is black material on the root surface of the tooth, it may be the caries on the root surface of the tooth. After suffering from root surface caries, we must carry out caries treatment in time and use high-speed turbine drill to completely remove the infected and discolored tooth tissue, and then fill the tooth surface with composite resin material to restore the shape of the tooth.
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