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首页> 外文会议>Conference on Lasers in Dentistry Ⅷ, Jan 20-21, 2002, San Jose, USA >Comparison of coronal leakage after smear layer removal with EDTA or Er:YAG laser
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Comparison of coronal leakage after smear layer removal with EDTA or Er:YAG laser

机译：EDTA或Er：YAG激光去除涂片层后冠状漏血的比较

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摘要

This study determined, in vitro, the coronal leakage of root canals evaluating the effect of smear layer removal by either EDTA or laser. Two sealers were also compared. Sixty-four canines were instrumented with the step-back technique and irrigated with 10 ml of 1% sodium hypochlorite. In Group 1, 10 teeth were sealed with Sealer 26~(~R) and 10 teeth were sealed with Grossman cement with no attempt of smear layer removal. Group 2 received a final irrigation of 15 ml of 15% EDTA, and was sealed as in Group 1. Group 3 received Er:YAG laser application (2940 nm, 140 mJ, 15 Hz and 42 J, 300 pulses, 500milli-sec pulse duration), and sealed as in Group 1. Root canals sealed with Sealer 26 had significantly less coronal leakage than Grossman cement (p<0.05). Coronal leakage after smear layer removal with 15% EDTA or Er:YAG laser was not statistically different (p>0.01).
机译：这项研究在体外确定了根管的冠状漏出，评估了通过EDTA或激光清除涂片层的效果。还比较了两个封口机。用后退技术对64只犬进行检测，并用10 ml 1％的次氯酸钠进行灌溉。在第1组中，用Sealer 26〜（〜R）密封10颗牙齿，用Grossman水泥密封10颗牙齿，而未尝试去除涂抹层。第2组接受15 ml 15％EDTA的最终冲洗，并按第1组的要求密封。第3组接受Er：YAG激光照射（2940 nm，140 mJ，15 Hz和42 J，300脉冲，500毫秒脉冲）持续时间），并按第1组进行密封。用Sealer 26密封的根管冠状漏血明显少于Grossman水泥（p <0.05）。用15％EDTA或Er：YAG激光去除涂片层后的冠状漏出率无统计学差异（p> 0.01）。

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