冠根折 crown-root fracture
草莓鞋带冠根腐 strawberryarmillaria crown and root
草莓冠根腐 strawberry dematophora crown root rot
根冠 [植] root cap ; [植] calyptra ; pileorhiza ; czapeczka korzeniowa
冠根比 top root ratio ; shoot and root dry matter ratio
冠根比例 Crown-to-Root Ratio ; CRR ; proportion between crown and root
修复体冠根比例 Crown-to-Root Ratio ; CRR
种植修复体冠根比例 Crown-to-Root Ratio
冠根折断 tooth crown-root fracture
目的：观察根管治疗后的下颌磨牙冠缺损类型与冠根折的关系。
Objective: To evaluate the relationship between crown defect types and crown fractures of root-canal-treated mandibular molars.
目的观察牙冠延长术治疗断缘位于龈下的冠根联合折断牙的临床效果。
Objective:To observe the clinical effect of tooth extrusion with progressive methods for anterior teeth with crown-root fracture.
结论短期内冠根向预备技术比逐步后退技术成形的根管更有利于根管充填后根尖孔的密封。
Conclusion it is better apical sealing ability in root canals prepared by crown-down technique than step-back technique.
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