1·CONCLUSION The clindamycin loaded coral paste is an ideal front tooth root canal filling material.
结论珊瑚克林霉素糊剂是一种较理想的前牙根管充填材料。
2·Conclusion: There is no effect on the whole compressive strength and resistance to cyclic fatigue of tooth root after prepared within 0.08 taper.
结论：根管预备后锥度在0.08以内对牙根的整体抗压性能和抗疲劳性能无明显影响。
3·Human tooth development is a reciprocal and consecutive process, which includes bud, cap, bell stages, tooth root development and tooth eruption.
人类牙齿的发育，经历蕾状期、帽状期、钟状期、牙根发育和牙齿萌出期。
4·Tooth coronal and tooth root boundary show one arc curve, call tooth neck, renown neck predestined relationship or neck line.
牙冠与牙根交界处呈一弧形曲线，称为牙颈，又名颈缘或颈线。
5·After withdrawal of traction force, tooth root and periodontal tissue were gradually repaired.
停止加力后，牙根及牙周组织逐渐修复。