Key words: immature permanent tooth, apexification, crown-root fracture

关键词: 年轻恒牙, 根尖诱导成形术, 冠根折

马学娟，朱姝，陈旭. 年轻恒牙根尖诱导成形术后4年发生复杂冠根折1例报告[J]. 中国实用口腔科杂志, DOI: 10.19538/j.kq.2017.09.014.

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