PDF(Pubmed)
Abstract：
The present study aimed to assess the effectiveness of different final irrigation regimens (Cold Atmospheric Pressure Plasma Jet, MTAD, and EDTA) in removing the smear layer from intra-radicular dentin using a Scanning Electron Microscope (SEM). Eighty-four mandibular premolars were prepared with ProTaper Universal hand files and were equally divided into four groups i.e. Normal saline (control), EDTA, MTAD and CAP Plasma Jet. Prepared samples in the control, EDTA and MTAD groups were irrigated with 5 milliliters of the irrigant, and it was retained for 2 min. In the CAP Plasma Jet group, the plasma plume was directed towards the canal lumen for 2 min. The smear layer removal of all the groups was evaluated at the coronal, middle and apical thirds. Statistical analysis was performed using Kruskal-Wallis test followed by Dunn\'s test. Evaluation by SEM showed that the smear layer removal ability of MTAD and EDTA were significantly better than CAP Plasma Jet (p < 0.05). While CAP Plasma Jet showed results comparable to EDTA in the coronal third. In the middle and apical third of the canal, its effect was comparable to the control group (p > 0.05). MTAD and EDTA aided in better smear layer removal than the CAP Plasma Jet in the coronal, middle, and apical third of the test samples. CAP Plasma jet performed better in the coronal third.
摘要：
本研究旨在评估不同最终灌溉方案的有效性(冷大气压等离子体射流，MTAD,和EDTA）使用扫描电子显微镜（SEM）从神经根内牙本质上去除涂抹层。用ProTaperUniversal手档案制备84颗下颌前磨牙，并平均分为四组，即生理盐水（对照），EDTA,MTAD和CAP等离子射流。在对照中制备样品，EDTA和MTAD组用5毫升冲洗剂冲洗，并保留2分钟。在CAP等离子喷射组,血浆羽流指向管腔2分钟。在冠状评估所有组的涂抹层去除，中部和顶端的三分之二。使用Kruskal-Wallis检验和随后的Dunn检验进行统计学分析。SEM评价表明，MTAD和EDTA的涂抹层去除能力明显优于CAP等离子射流（p<0.05）。而CAP等离子体射流在冠状区显示出与EDTA相当的结果。在运河的中部和顶端三分之一，其效果与对照组相当(p>0.05)。MTAD和EDTA比冠状等离子体射流有助于更好的涂抹层去除，中间,和顶端三分之一的测试样本。CAP等离子体射流在冠状三分之一处表现更好。
