学科：生物学 词目：核冠 英文：nuclear cap 释文：核冠是壶菌类厚膜子囊菌等的游动孢子或运动性配子中核旁的鞍状小体。它由双层膜组成，内部含有大量的核蛋白体。
目的研究老年人后牙残根残冠行桩核冠修复的效果。
Objective To investigate the effects of post-core crowns for endodontically treated posterior teeth in elderly.
结论：分体桩核冠能较好地修复老年人磨牙残根残冠。
Conlusion: the restoration of molars residual root and crown of the aged can be improved by means of split dowel crown.
结果：建立了上颌第一磨牙残根桩核冠的三维有限元模型。
Result: the three-dimensional models of the first maxillary molar residual root restored with post-core crown were generated.
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