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劈裂牙形式有多种,以纵折牙即牙冠并牙根纵行裂开保存治疗较困难。笔者对后牙冠根合并牙折做了些保存治疗工作,效果良好。
There are many forms of splitting teeth, the vertical teeth that the crown and root canal longitudinal splitting preservation treatment more difficult. The author of the tooth root crown merger tooth made some preservation treatment, the effect is good.