传统注射器冲洗与根尖负压冲洗对根尖清洁效率的比较
A comparison of the debris removal effects from apical area between apical negative pressure irrigation and conventional needle irrigation
郝宇红 1林轩东 1龙金东 1秦鹤嘉 1谢方方1
作者信息
- 1. 广西医科大学附属口腔医院,广西南宁530021
- 折叠
摘要
目的:比较传统注射器冲洗技术和根尖负压冲洗技术对根尖1 mm区域碎屑的清理效果.方法:取新鲜拔除的下颌单根单根管前磨牙20个,建立根尖周模型后,将其随机分为2组(n=1O).然后用Protaper Universal镍钛系统以冠向下技术将各样本的根管预备至F3,在预备过程中对CN组样本用#31传统注射器冲洗负压冲洗;对NP组样本用由#25、#27、#31冲洗针头组装而成的负压冲洗装置进行根尖负压冲洗(冲洗液均为52.5 g/L NaCLO和170 g/L EDTA).根管预备完成后的所有样本分别经脱钙和石蜡包埋后,于距离根尖孔1 mm处进行横断切片,并对切片进行HE染色;然后在光学显微镜下观察各组根管内的有机碎屑残留情况,并通过图像分析软件测量其碎屑清除率.结果:CN组根尖1 mm水平处的平均清洁率为97.83％,NP组为99.34％ (P ＜0.05).结论:根尖负压冲洗对根尖1 mm水平处的清洁效果优于传统注射器冲洗.
Abstract
AIM:To evaluate the efficacy of apical negative pressure irrigating system and conventional needle irrigation method in removing debris from root canals.METHODS:The canals of 20 extracted premolars with single canal,were instrumented with ProTaper Universal system and irrigated with 52.5 g/L NaCLO and 170 g/L EDTA.Then the teeth were randomly divided into 2 groups (n =10).During root canal preparation,the canals in CN group were irrigated using a 31-gauge irrigation needle,in NP group with a series of apical negative pressure irrigation needles..After root canal preparation,all teeth were decalcified,embedded,serial sections were prepared at 1 mm from the apical level and examined by HE staining,the debris removal was evaluated by image analysis.RESULTS:At 1 mm from anatomical apex,the debris removal efficacy of NP group and CN group was 99.34％ and 97.83％ respectively(P ＜0.05).CONCLUSION:Apical negative pressure irrigation is more effective in debris removal than conventional needle irrigation.
关键词
根管冲洗/传统注射器冲洗/根尖负压冲洗/根尖清洁率Key words
root canal irrigation/conventional needle irrigation/apical negative pressure irrigation/cleanliness of apical area引用本文复制引用
基金项目
广西自然科学基金(2011GXNSFA01829)
出版年
2017
NETL
NSTL
维普
万方数据