Objective: To investigate the effect of single-visit root canal treatment (RCT) on teeth with chronic apical periodontitis using contemporary technique of canal cleaning, shaping and obturation.
目的：评价慢性根尖周炎一次性根管治疗的临床效果和可靠性。
To determine whether completion of root canal treatment (RoCT) in a single visit or over two or more visits, with or without medication, makes any difference in term of effectiveness or complications.
对比和评价在一次、或者两次及更多次看牙医过程中完成根管治疗，是否使用药物，对治疗效果以及病发症产生怎样影响。
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