iRoot SP糊剂根尖封闭效果的实验研究  

Study on Apical Sealing Ability of iRoot SP Root Canal Sealer

作　　者：张明[1] 郭闯[1] 钟双泽 冯岩[1] 

机构地区：[1]福建医科大学附属口腔医院牙体牙髓科,福州350002

出　　处：《福建医科大学学报》2016年第2期126-128,共3页Journal of Fujian Medical University

基　　金：福建省自然科学基金(2014J01317)

摘　　要：目的通过模拟根管的染料渗透试验评价iRoot SP糊剂的根尖封闭性能。方法模拟根管样本88个,随机分为4个实验组(每组20颗)和1个阳性对照组(8颗),A1组采用iRoot SP糊剂单尖充填法充填;A2组采用iRoot SP糊剂热垂直加压充填;A3组采用AH-plus糊剂单尖充填法充填;A4组采用AH-plus糊剂热垂直加压充填。将样本置于亚甲基蓝中进行染料渗透,口腔手术显微镜下拍照测量染料渗透长度;分光光度法检测染料渗透量。结果各实验组均有不同程度的染料渗透,其中A1组染料渗透的长度和量均大于A2组,差别有统计学意义(P<0.01);A2组染料渗透的长度和量均大于A4组,差别有统计学意义(P<0.01)。结论 iRoot SP糊剂的根尖封闭效果较AH-plus根管糊剂差;当使用iRoot SP糊剂进行根管充填时,热牙胶垂直加压充填的效果比单尖充填的封闭效果好。Objective The aim of this study was to evaluate the apical sealing ability of iRoot SP root canal sealer using dye penetration test on the simulated root canals. Methods Eighty-eight simulate root canals were randomly divided into four test groups（20canals each）and one positive control group（8canals）. Group A1 specimens were obturated with iRoot SP using single-cone technique. Group A2 specimens were obturated with iRoot SP using warm vertical compaction technique. Group A3 specimens were obturated with AH-plus using single-cone technique. Group A4 specimens were obturated with AH-plus using warm vertical compaction technique. The simulate root canals were put into methylene blue and the apical microleakage was evaluated by dye penetration method. Linear and quantitative dye penetration were measured and analyzed. Results The value of group A1 was greater than group A2,there was significant difference between two groups（P〈0.01）;The value of group A2 was greater than group A4,there was a significant difference between the two groups（P〈0.01）. Conclusion The apical sealing ability in vitro of iRoot SP is less than AH plus. When iRoot SP is used to seal the canals,the effect of warm vertical compaction technique is better than single-cone technique.

关 键 词：根管充填 根管充填材料 软膏 根管疗法 牙髓腔/解剖学和组织学 染色与标记 诊断和治疗物质外渗 

分 类 号：R781.05[医药卫生—口腔医学]