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文献中已有相当多的关于牙齿各种畸形的记载,而临床上并不少见的畸形中央尖(患病率为1.66)也有报导,但是牙内陷畸形牙的报导,却极为罕见。国内外文献中至今未
There have been quite a lot of records of various deformities in the literature, while the most common deformity central point (prevalence rate 1.66) has been reported in the literature. However, the reports of tooth invagination are very rare. Domestic and foreign literature so far not yet