摘要
目的:比较不同终末冲洗方式(注射器冲洗、被动超声荡洗、新型声波活化荡洗EDDY以及光子诱导光声流技术)对iRoot SP根管封闭剂粘接强度和牙本质小管渗透性的影响,探讨最佳的根管辅助冲洗装置.方法:选取58个单根离体前磨牙随机分为4组.扫描电子显微镜(SEM)观察根管壁玷污层以及牙本质小管暴露情况;推出实验检测粘接强度;共聚焦激光扫描显微镜(CLSM)评估根管封闭剂渗透性.结果:扫描电镜显示SNI组牙本质小管开口大部分被碎屑覆盖,PUI组牙本质小管开口较少,而EDDY组和PIPS组牙本质小管开口表面光滑.与SNI和PUI相比,EDDY和PIPS提高了iRoot SP的粘接强度和渗透深度.结论:SNI、PUI、EDDY、PIPS可部分清除牙本质碎屑,开放牙本质小管.与SNI和PUI相比,EDDY和PIPS提高了粘接强度和小管渗透性,且EDDY更方便、更经济,具有临床应用价值.EDDY具有临床推广应用的潜力.
Abstract
AIM:Evaluate the impact of various irrigation activation techniques—Syringe and Needle Irrigation(SNI),Passive Ultrasonic Irrigation(PUI),Sonically Activated Irrigation(SAI),EDDY,and Photon Induced Photoacoustic Streaming(PIPS)—on iRoot SP root canal sealer's push-out bond strength and dentinal tubule permeability.METHODS:Fifty-eight human premolar samples were randomly divided into four groups.Scanning electron microscopy(SEM)observed dentin wall fragments and dentinal tubules.Confocal laser scanning microscopy(CLSM)assessed sealant sealing ability,and push-out tests measured bond strength.RESULTS:SEM showed SNI left most dentinal tubule openings covered by debris,PUI had a uniform debris layer with few tubule openings,while EDDY and PIPS left smooth surfaces with visible tubule openings.Compared to SNI and PUI,EDDY and PIPS enhanced bond strength and penetration depth of iRoot SP.CONCLUSION:SNI,PUI,EDDY,and PIPS partially removed debris and opened dentin tubules.EDDY and PIPS improved bonding strength and tubule permeability compared to SNI and PUI,with EDDY offering greater convenience,cost-effectiveness,and clinical value.EDDY has the potential for clinical popularization and application.
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