Half of the tooth is lost, according to the damage to take different treatment measures, as follows: 1, no damage to the root, root canal treatment, root canal staking, and then fill the tooth, in order to ensure the solidity and normal use, it is recommended that more defective teeth fillings after doing braces; 2, the defective teeth affect the stability of the root and normal use, it is recommended to extract, if forced fillings, the effect is poor, can not achieve a normal diet purpose. After the tooth is extracted, after the wound heals, artificial teeth can be installed to restore the chewing function.