PDF(Pubmed)
Abstract：
UNASSIGNED: This study investigated the nanoleakage of root canal obturations using calcium silicate-based sealer according to different drying methods.
UNASSIGNED: Fifty-two extracted mandibular premolars with a single root canal and straight root were selected for this study. After canal preparation with a nickel-titanium rotary file system, the specimens were randomly divided into 4 groups according to canal drying methods (1: complete drying, 2: blot drying/distilled water, 3: blot drying/NaOCl, 4: aspiration only). The root canals were obturated using a single-cone filling technique with a calcium silicate-based sealer. Nanoleakage was evaluated using a nanoflow device after 24 hours, 1 week, and 1 month. Data were collected twice per second at the nanoscale and measured in nanoliters per second. Data were statistically analyzed using the Kruskal-Wallis and Mann-Whitney U-tests (p < 0.05).
UNASSIGNED: The mean flow rate measured after 24 hours showed the highest value among the time periods in all groups. However, the difference in the flow rate between 1 week and 1 month was not significant. The mean flow rate of the complete drying group was the highest at all time points. After 1 month, the mean flow rate in the blot drying group and the aspiration group was not significantly different.
UNASSIGNED: Within the limitations of this study, the canal drying method had a significant effect on leakage and sealing ability in root canal obturations using a calcium silicate-based sealer. Thus, a proper drying procedure is critical in endodontic treatment.
UNASSIGNED: Fifty-two extracted mandibular premolars with a single root canal and straight root were selected for this study. After canal preparation with a nickel-titanium rotary file system, the specimens were randomly divided into 4 groups according to canal drying methods (1: complete drying, 2: blot drying/distilled water, 3: blot drying/NaOCl, 4: aspiration only). The root canals were obturated using a single-cone filling technique with a calcium silicate-based sealer. Nanoleakage was evaluated using a nanoflow device after 24 hours, 1 week, and 1 month. Data were collected twice per second at the nanoscale and measured in nanoliters per second. Data were statistically analyzed using the Kruskal-Wallis and Mann-Whitney U-tests (p < 0.05).
UNASSIGNED: The mean flow rate measured after 24 hours showed the highest value among the time periods in all groups. However, the difference in the flow rate between 1 week and 1 month was not significant. The mean flow rate of the complete drying group was the highest at all time points. After 1 month, the mean flow rate in the blot drying group and the aspiration group was not significantly different.
UNASSIGNED: Within the limitations of this study, the canal drying method had a significant effect on leakage and sealing ability in root canal obturations using a calcium silicate-based sealer. Thus, a proper drying procedure is critical in endodontic treatment.
摘要：
■本研究根据不同的干燥方法，使用硅酸钙基密封剂研究了根管闭塞的纳米渗漏。
■本研究选择了52个单根根管和直根的下颌前磨牙。用镍钛旋转文件系统制备运河后，根据运河干燥方法将标本随机分为4组(1:完全干燥，2：吸干/蒸馏水，3:印迹干燥/NaOCl,4：仅抽吸）。使用基于硅酸钙的密封剂的单锥填充技术封闭根管。24小时后，使用纳米流通量装置评估纳米渗漏，1周,和1个月。以纳米级每秒两次收集数据并以纳升每秒测量。使用Kruskal-Wallis和Mann-WhitneyU检验(p<0.05)对数据进行统计学分析。
■24小时后测量的平均流速在所有组中的时间段中显示出最高值。然而,1周和1个月之间的流量差异不显著.完全干燥组的平均流速在所有时间点都是最高的。一个月后,印迹干燥组和抽吸组的平均流速没有显着差异。
■在本研究的局限性内，根管干燥方法对使用硅酸钙基封闭剂的根管闭塞的渗漏和密封能力有显著影响。因此，正确的干燥程序在牙髓治疗中至关重要。
■本研究选择了52个单根根管和直根的下颌前磨牙。用镍钛旋转文件系统制备运河后，根据运河干燥方法将标本随机分为4组(1:完全干燥，2：吸干/蒸馏水，3:印迹干燥/NaOCl,4：仅抽吸）。使用基于硅酸钙的密封剂的单锥填充技术封闭根管。24小时后，使用纳米流通量装置评估纳米渗漏，1周,和1个月。以纳米级每秒两次收集数据并以纳升每秒测量。使用Kruskal-Wallis和Mann-WhitneyU检验(p<0.05)对数据进行统计学分析。
■24小时后测量的平均流速在所有组中的时间段中显示出最高值。然而,1周和1个月之间的流量差异不显著.完全干燥组的平均流速在所有时间点都是最高的。一个月后,印迹干燥组和抽吸组的平均流速没有显着差异。
■在本研究的局限性内，根管干燥方法对使用硅酸钙基封闭剂的根管闭塞的渗漏和密封能力有显著影响。因此，正确的干燥程序在牙髓治疗中至关重要。
