To explore the proper method of producing composite resin post and core.
探索复合材料桩钉的成型方法。
The ferrule effect is influenced by elastic modulus of post and core materials.
箍效应受桩核材料弹性模量的影响。
The remaining of the residual roots and crowns in anterior teeth need to be treated with post and core.
前牙残根残冠的保存和修复在临床上多见，治疗一般采用桩冠修复。
Objective: To observe the clinical result of the method of combined impression used in post and core PFM crowns.
目的：观察琼脂类和藻酸盐类印模材联合印模法在桩核烤瓷冠中的应用效果。
Objective: To study the effect of DMG polysiloxane impression material in the restoration of the post and core crown.
目的：探讨采用DMG枪式硅橡胶印模材料制取桩核根管印模的应用及护理配合体会。
Objective To investigate the clinical effect of cast post and core on the restoration of large area defects of tooth.
目的探讨铸造桩核修复牙体大面积缺损的临床疗效。
Objective: to investigate the effect of cast post and core on the restoration of premolars and molars of extensive loss.
目的：探讨铸造金属桩核在后牙牙体大面积缺损修复中应用的临床疗效。
In cast metal post and core group 4 teeth were found root fracture, 3 cast metal post and core were loose and 8 teeth were with gingival grey line.
而铸造金属桩核组发生根折4颗、铸造金属桩核脱落3颗，出现牙龈色素沉着8颗。
After perfect root canal therapy to the residual root and crown of the front tooth, it is the main repair method to utilize a post and core crown at present.
前牙残根残冠经过完善的根管治疗后，利用桩核冠修复在目前是主要的修复方法。
Objective To investigate the clinical effect of the carbon fiber reinforced composite resin (CFRC) post and core, and to summarize the indication of CFRC post in clinic.
目的观察自主研制的高强度碳纤维预成桩的临床应用效果。
To investigate the effect of various post and core materials on stress distribution of ferrule effect in post crown, and to evaluate the biomechanics mechanism of ferrule effect in post crown.
研究桩冠修复中不同桩核材料对箍效应的应力分布影响，探讨箍效应的生物力学机制。
Objective To compare the fracture resistance and fracture modes of teeth restored with four diferent post-and-core systems.
比较纤维桩核系统和金属铸造桩核系统修复后牙体组织的抗折裂强度和折裂模式。
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。
Results: New prefabricated post-and-core could produce a close connection with tooth.
结果：新型预成桩核能与牙体紧密结合。
Methods87 cases were treated with routine post-and-core PFM crowns after root canal therapy respectively.
方法87例残根残冠经过完善的根管治疗后，用螺纹根管钉、光固化树脂核、金属烤瓷全冠进行修复。
Methods87 cases were treated with routine post-and-core PFM crowns after root canal therapy respectively.
方法87例残根残冠经过完善的根管治疗后，用螺纹根管钉、光固化树脂核、金属烤瓷全冠进行修复。
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