使用儿童手动和旋转锉系统与传统手动K锉进行下颌乳磨牙牙髓摘除术时的操作时间及根管充填质量的临床评估：一项双盲随机对照试验
Clinical evaluation of instrumentation time and quality of obturation using paediatric hand and rotary file systems with conventional hand K-files for pulpectomy in primary mandibular molars: a double-blinded randomized controlled trial.
作者信息
Priyadarshini P, Jeevanandan G, Govindaraju L, Subramanian E M G
机构信息
Department of Paediatric and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, 162, Poonamallee High road, Chennai, 600077, India.
出版信息
Eur Arch Paediatr Dent. 2020 Dec;21(6):693-701. doi: 10.1007/s40368-020-00518-w. Epub 2020 Mar 17.
AIM
The present study aims to comparatively evaluate the instrumentation time and obturation quality using paediatric manual (Kedo-SH) and rotary (Kedo-S and Kedo-SG Blue) with conventional manual (Hand K-files) instrumentation technique for pulpectomy in primary mandibular molars.
MATERIALS AND METHODS
A double-blinded randomized controlled trial was designed, recruiting participants with pulpally involved primary mandibular molars requiring pulpectomy in the age group of 6-9 years old. Sixty primary mandibular molars were randomly allocated to either of the four intervention groups: Group I: 15 teeth were instrumented using hand K-files (control group); Group II: 15 teeth were instrumented with paediatric rotary files (Kedo-S); Group III: 15 teeth were instrumented with paediatric hand files Kedo-SH (experimental group) and Group IV: 15 teeth were instrumented with paediatric rotary file system Kedo-SG Blue. Instrumentation time was recorded during root canal preparation and post-operative quality of obturation in each group was also assessed. Extracted data was subjected to statistical analysis using Chi-square, One-way ANOVA and post hoc Tukey test.
RESULTS
Mean instrumentation time was significantly reduced for Kedo-SG Blue (2.7840 ± 0.34217) min-s followed by Kedo-S (3.4827 ± 0.48657), Kedo-SH (5.8800 ± 0.48345) min-s and hand K-files (6.2167 ± 0.30978) min-s (p = 0.0005). A statistically significant difference was found in the obturation quality (p = 0.001) between the four groups with higher percentage of optimal fillings observed with rotary Kedo-SG Blue (80%) followed by Kedo-SH (46.7%); Kedo-S (40.0%) and hand K-files (20%).
CONCLUSIONS
On comparative evaluation, a marked reduction in instrumentation time and superior quality of obturation was found with rotary Kedo-SG Blue file system followed by Kedo-SH, Kedo-S and hand K-files.
目的
本研究旨在比较评估使用儿童手动器械（Kedo-SH）和旋转器械（Kedo-S和Kedo-SG Blue）与传统手动器械（手用K锉）进行下颌乳磨牙牙髓摘除术时的预备时间和充填质量。
材料与方法
设计一项双盲随机对照试验，招募6至9岁需要进行牙髓摘除术的下颌乳磨牙牙髓受累的参与者。60颗下颌乳磨牙随机分配至四个干预组中的任意一组：第一组：15颗牙齿使用手用K锉进行预备（对照组）；第二组：15颗牙齿使用儿童旋转锉（Kedo-S）进行预备；第三组：15颗牙齿使用儿童手动锉Kedo-SH（试验组）；第四组：15颗牙齿使用儿童旋转锉系统Kedo-SG Blue进行预备。在根管预备过程中记录预备时间，并评估每组术后的充填质量。提取的数据采用卡方检验、单因素方差分析和事后Tukey检验进行统计分析。
结果
Kedo-SG Blue的平均预备时间显著缩短（2.7840±0.34217）分钟，其次是Kedo-S（3.4827±0.48657）、Kedo-SH（5.8800±0.48345）分钟和手用K锉（6.2167±0.30978）分钟（p = 0.000）。四组之间的充填质量存在统计学显著差异（p = 0.001），旋转器械Kedo-SG Blue的最佳充填百分比更高（80%），其次是Kedo-SH（46.7%）、Kedo-S（40.0%）和手用K锉（20%）。
结论
通过比较评估发现，旋转器械Kedo-SG Blue系统的预备时间显著缩短，充填质量优于Kedo-SH、Kedo-S和手用K锉。
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