| 张姝妤,洪瑾,周梦琪.显微CT评价Er:YAG激光对完全型管间峡区碎屑的清理能力[J].口腔材料器械杂志,2020,29(1):25-30. |
| 显微CT评价Er:YAG激光对完全型管间峡区碎屑的清理能力 |
| Evaluation of cleaning ability of Er:YAG laser for debris in the complete root canal isthmus by Micro-CT |
| 投稿时间：2018-06-04 修订日期：2019-12-06 |
| DOI：10.11752/j.kqcl.2020.01.05 |
| 中文关键词: 完全型管间峡区 Er:YAG 激光 Micro CT |
| 英文关键词:Complete root canal isthmus Er YAG laser Micro CT |
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| 中文摘要: |
| 目的 应用显微CT技术，观察和评价不同功率Er：YAG激光与NaClO冲洗液联合使用时对完全型管间峡区内碎屑的清理效果，为探索清理完全型管间峡区的新方法提供实验依据。方法 通过CBCT扫描后，挑选出经统一截冠且根管预备后仍含完全型管间峡区的前磨牙20颗，随机分成4组，显微CT初次扫描，采集图像，峡区定位。实验组分别使用1.5 W、2.0 W、2.5 W Er：YAG激光照射根管1 min并使用1.0% NaClO冲洗根管，对照组仅用1.0% NaClO溶液冲洗根管1 min。激光照射冲洗根管完成后，显微CT再次扫描标本，采集图像，计算处理前后完全型管间峡区碎屑量的变化值百分比，并进行统计学分析。结果 实验组随激光功率增大，峡区碎屑的减少量亦增大，分别为7.15%、9.19%和10.14%。对照组碎屑减少量为0.51%。3个实验组的碎屑减少量与对照组之间的差异具有统计学意义（P<0.05）。结论 使用Er：YAG激光配合NaClO溶液处理根管，能较好的清理完全型管间峡区，激光功率越大，清理效果越好。 |
| 英文摘要: |
| Objective The aim of this study was to observe and evaluate the effect of different power of Er:YAG lasers and NaClO rinsing liquid on the cleanup of debris in the complete canal isthmus by using microCT technology, and to provide a new method for exploring the clean up of debris in the root canal isthmus. Methods After CBCT scan, 20 pre-molars with uniform truncated crowns containing the canal isthmus after root canal preparation were randomly divided into four groups. The experimental teeth were scanned with micro-CT for the first time and the images were collected and the districts of canal isthmus were positioned. Then, the three experimental groups were irradiated with 1.5 W, 2.0 W, and 2.5 W of Er:YAG lasers for 1 min. The control group was only washed with a 1.0% NaClO solution for 1 min. The specimens were scanned by the micro-CT, the images were collected and the percent of changes in the amount of debris in the gap between the complete tubes before and after treatment and the statistical analysis was perfromed. Results With the increase of laser power in the three experimental groups, the percentages of detritus reduction in the canal isthmus were increased, which were 7.15%, 9.19%, and 10.14%, respectively. The percentage of detritus reduction in the conrol group was 0.51%. There was a significant difference between the three experimental groups and the control group. Conclusion The treatment of root canal with Er:YAG laser and NaClO solution can effectively clean the canal istumus. The greater the laser power, the better the cleaning effect. |
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