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上颌双侧乳尖牙双根一例
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- Author:
- No author available
- Journal Title:
- Chinese Journal of Stomatology
- Issue:
- 12
- DOI:
- 10.3760/cma.j.issn.1002-0098.2012.12.008
- Key Word:
- No keyword available
Abstract： 牙齿发育异常可由于牙板、牙胚的分化异常导致牙齿数目、大小、形态的异常(形态分化异常),或由牙体硬组织形成异常导致牙齿结构异常(组织分化异常).与恒牙相比,乳牙发育异常的发生率较小,乳牙有额外牙根者较少见,上颌乳尖牙根通常呈三角锥形细长单根,双根乳尖牙极罕见,北京大学口腔医学院·口腔医院儿童口腔科接诊一例上颌双侧乳尖牙双根病例,现报告如下.
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