A small piece of the edge of the tooth is broken off, depending on the situation, can be filled with resin or directly round the edge can be, specific need to go to the hospital according to the situation to deal with. 1. Resin filling: the edge of the big teeth can be broken in demineralization caused by the tooth, usually enamel loss, can be used to fill the resin repair, to restore the original shape of the tooth body. 2. Rounding: If the broken part is located in the marginal ridge of the tooth, the resin filling is easy to fall off, and if the broken part is small, you can use the instrument to grind the edge of the edge to be rounded and smooth. If the edge of the tooth is broken off, it is recommended to go to the hospital in time, so as not to affect the normal chewing function of the defect.