root-canal

68 posterior teeth wich vertical fracture,were ligated annularly,and undergone root canal therapy and resin filling.

用结扎外固定方法,对68个纵折后牙行治疗术,树脂充,全冠修复。

Objective: To evaluate the effect of overfilling with zinc oxide eugenol (ZOE) on root canal therapy (RCT) for primary tooth.

观察ZOE碘仿糊剂充超充对乳牙治疗疗效影响。

To evalate the efficacy of iodoform-calcium hydroxide used as an intracanal medication in root canal therapy of deciduous teeth with periapical periodontitis.

观察氢氧化钙-碘仿糊剂应用于乳牙感封药临床疗效。

To study the content alteration of bacterial endotoxin in the exudant from the root canals of periapical treated with calcium hydroxide as intracanal medicament.

检测氢氧化钙封药前后尖病患牙内细菌内毒素变化。

To study the content alteration of bacterial endotoxin in the exudant from the root canals of periapical diseases treated with calcium hydroxide as intracanal medicament.

检测氢氧化钙封药前后尖病患牙内细菌内毒素变化。

Methods Prepare the root canal with routine, stepback, endo-ultrasound, precurve and synthesis methods, then fill the root cannal with gutta percha points, reexaminate after 6 months.

方法采用常规法、逐步后退法、超声法、预弯法和综合法进行预备并充，6个月后复查。

Objective: To explore the prosthetic design and procedure of resid ual crown with complete root canal imperforation so as to solve the clinical pro blem of such cases.

探讨完全闭锁钙化残冠、残临床修复设计与方法,为修复临床对这类病例提供解决方案。