Incisor lost a piece will not grow out by itself, teeth belong to the non-renewable tissue organs, incisors after partial loss, can not form new dental tissue, can take treatment measures according to the specific situation, can take smooth car needle, all-porcelain veneer, composite resin filling, one-time root canal treatment, etc., as follows: 1, smooth car needle: if the defect site is shallow, does not affect the aesthetics, can apply smooth car needle 2.All-porcelain veneer: If the area is large, you can make all-porcelain veneer restoration after tooth preparation. 3.Compound resin filling: If the defect is exposed to dentin, when cold, hot, sour or sweet produce soreness, you can apply compound resin filling to restore the anatomical shape of the crown. 4.One-time root canal treatment: If the pulp angle of the incisor is high and exposed to the defective area, you can complete one-time root canal treatment under local anesthesia. local anesthesia to complete the one-time root canal treatment and produce an all-ceramic crown restoration.