目的观察比较氢氧化钙、抗生素制剂和甲醛甲酚在根管内封药的消毒效果。
Comparison of the effect of calcium hydroxide and formocresol on treatment of chronic periapical periodontitis;
前言： 目的：观察地塞米松氢氧化钙糊剂在坏死性牙髓根管内封药的临床疗效。
Objective: To observe the clinic effect of paste of dexamethasone and calcium hydroxide which as an intracanal medication on the treatment of dead pulp.
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