前牙残根玻璃纤维桩修复的效果(2)

    
　　桩冠修复最严重的并发症为根折和桩钉折断无法取出，导致修复彻底失败。预成合金桩弹性模量大于牙本质会在牙根?粘结剂?桩界面产生应力，从而引起修复体失败的可能。纤维桩系统的出现，解决了这些问题，它易于从根管内拆取[6]。因此，玻璃纤维桩是一种更好的桩核修复体。                           
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　　[6]童庆春. 玻璃纤维增强型复合树脂桩核对基牙折断烤瓷牙效果[J]. 青岛大学医学院学报, 2008,44(6):538?539.

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