The incidence of C-shaped root canal system is verdicted according to its anatomic features.
根据C形根管系统的解剖学特征判断其发生率。
AIM: To discuss the clinical diagnosis and treatment of root canal system of mandibular second molars.
目的：探讨下颌第二磨牙根管系统的特征及临床诊断和治疗方法。
Objective the aim of this study was to investigate the root canal system of maxillary first premolar .
目的观察离体上颌第一前磨牙根管解剖结构。
Objective to study the root canal system morphology and provide anatomic facts for treatment of dental disease.
目的了解根管的形态结构，为牙疾病治疗提供解剖学参考。
Objective: It is difficult for three-dimensional sealing of root canal because of the complexity of the root canal system.
目的：根管系统的复杂性使得完善严密的三维封闭根管系统成为根管治疗成功的难点。
However, some research data show that mandibular incisors' root canal anatomy is comparatively complex, and root canal system has many variations.
但有资料表明下颌切牙的根管解剖形态较为复杂，变异较多。
The case demonstrates an unusual morphological configuration of the root canal system and supplements previous reports of the existence of such configurations in mandibular incisors.
该案例表明一个不寻常的形态配置根管系统和补充以前的报告中存在这样的配置在下颚门牙。
Objective To establish a new evaluation system of curved root canal deviation by the technique of micro-CT.
目的通过微焦点CT技术建立一种新的根管偏移评价体系。
Objective To evaluate microleakage of total-and self-etch system combining with resin composites in rehabilitating flared root canal.
目的比较全酸蚀和自酸蚀两种黏结系统联合复合树脂重塑喇叭状残根的微渗漏。
Objective:To introduce a new prefabricated post-and -core system, a helical drilling bit and a prefabricated post-and -core consisting of a root canal orifice bur which was designed by the author.
目的：介绍一种由螺旋型根管钻、自行设计的根管口台阶状车针、预成桩核组成的预成桩核系统。
Objective:To introduce a new prefabricated post-and -core system, a helical drilling bit and a prefabricated post-and -core consisting of a root canal orifice bur which was designed by the author.
目的：介绍一种由螺旋型根管钻、自行设计的根管口台阶状车针、预成桩核组成的预成桩核系统。
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