Self-cleaning dental mask

The utility model relates to a self-cleaning dental mask which comprises a track ring, a head-mounted ring, a plastic mask I, a plastic mask II, a mask brush and a control system, the head ring is arranged in the track ring; an annular track is arranged in the track ring; two groups of electric moving blocks are arranged in the annular track; a clamping piece is arranged at the bottom of each group of electric moving blocks; a through groove is formed in the bottom of the track ring, and the two sets of clamping pieces extend downwards from the through groove and detachably and correspondingly clamp the plastic mask I and the plastic mask II respectively; the mask brush is detachably distributed at the rear part of the track ring; a charging port is formed in the track ring; and the control system is connected with the electric moving block through a wireless signal. The device can help a dentist to wipe a mask, remove water drops on the mask and avoid water stain formation and biological pollution, the devic