root canal

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

观察ZOE碘仿糊剂根对乳牙根管治疗疗效影响。

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

观察氢氧钙-碘仿糊剂应用于乳牙感染根管封药临床疗效。

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

检测氢氧钙封药前后尖周病患牙根管内细菌内变。

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.

检测氢氧钙封药前后尖周病患牙根管内细菌内变。

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、声法、预弯法和综合法进行根管预备并填，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.

探讨根管完全闭锁钙残冠、残根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。