Methods: Mycostatin was sealed in root canals in 76 cases with therapy-resistant apical periodontitis, and post-operation response was evaluated.
方法：76例根尖周病久治不愈的患者，采用制霉菌素根管内用药，观察封药后的反应。
Methods: Mycostatin was sealed in root canals in 76 cases with therapy-resistant apical periodontitis, and post-operation response was evaluated.
方法：76例根尖周病久治不愈的患者，采用制霉菌素根管内用药，观察封药后的反应。
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