Hicks M J, Flaitz C M
ASDC J Dent Child. 1985 May-Jun;52(3):217-9.
This developmental phenomenon may occur in as many as 10 percent of maxillary lateral incisor teeth. The case described in this report occurred in a maxillary right central incisor which was also inflicted with a partial coronal agenesis.
这种发育现象可能在多达10%的上颌侧切牙中出现。本报告中描述的病例发生在上颌右中切牙,该牙齿还伴有部分冠部发育不全。