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剂对乳牙管治疗疗的影响。

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-剂应用于乳牙感染管封药的临床疗。

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周病患牙管内细菌内毒素的变化。

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周病患牙管内细菌内毒素的变化。

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、声法、预弯法和综合法进行管预备并填，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.

探讨管完全闭锁钙化残冠、残的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。