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J Endod:未进行器械预备但清洁的人前磨牙根管壁牙本质结构:一项扫描电镜观察

2018-03-24 lishiting MedSci原创

常规的牙髓治疗包括根管预备,并且大多数会预备至#25/.06或更大号器械,由此改变了根管壁的原始解剖形态。近年来,能量驱动的设备已经开始用来促进清理经小号器械疏通过的根管甚至是未预备过的根管,例如:光子诱导的光声流(Fotona LLC, Dallas, TX)和多声波GentleWave系统(Sonendo Inc, Laguna Hills, CA)。这篇研究的目的是为了评估非器械预备法清理经

常规的牙髓治疗包括根管预备,并且大多数会预备至#25/.06或更大号器械,由此改变了根管壁的原始解剖形态。近年来,能量驱动的设备已经开始用来促进清理经小号器械疏通过的根管甚至是未预备过的根管,例如:光子诱导的光声流(Fotona LLC, Dallas, TX)和多声波GentleWave系统(Sonendo Inc, Laguna Hills, CA)。这篇研究的目的是为了评估非器械预备法清理经#10 K锉探查通畅过的前磨牙后根管壁解剖形态的变化。

研究收集24颗新鲜拔除的人前磨牙,#10 K锉探查通畅根管。17颗牙齿使用3%次氯酸钠施以GentleWave系统清理,7颗未治疗的牙齿用作阴性对照。牙齿劈裂后通过扫面电镜观察根管冠、中和根尖1/3的牙本质表面。随后,根管壁的结构按照预先设定的包括4种参数的标定进行评估:钙化石,表面不规则处,牙本质小管开放和组织碎屑。

结果显示,在根管系统中,矿化牙本质表面清洁,未发现有机组织残余或碎屑,包括2根管中间的峡部。未器械预备根管的大多数区域均展现出不规则的牙本质结构,包括之前未报道的指样突出物。峡部没有或仅有少量牙本质小管开放。测试组的牙本质结构得到完好的保存,而未经处理对照的牙齿组织碎屑存在于大部分牙本质的表面。

结论:采用非器械预备法清理前磨牙后的根管壁牙本质展现出广泛的结构多样性,特别是在根中和根尖区域。并且未检测出有机组织残余和牙本质碎屑的存在。

原始出处

Wang Z, Shen Y, et al. Root Canal Wall Dentin Structure in Uninstrumented but Cleaned Human Premolars: A Scanning Electron Microscopic Study. J Endod. 2018 Mar 14. pii: S0099-2399(18)30068-2. doi: 10.1016/j.joen.2018.01.014.

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    2018-03-25 changjiu

    学习一下谢谢

    0

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    2018-03-24 三生有幸9135

    学习一下谢谢分享

    0

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J Endod:具有偏心旋转的预备器械对下颌**磨牙根管成形效果的研究:一项micro-CT观察

这篇研究的目的是为了评估2种具有偏心旋转的镍钛器械根管成形的效果,并与常规的中心定位旋转的器械相比较。

J Endod:Micro-CT观察评估使用新的热处理镍钛系统后牙本质微裂纹的形成情况

这篇研究的目的是通过micro-CT观察分析在应用HyFlex CM (Coltène/Whaledent, Altstätten, Switzerland), HyFlex EDM (Coltène/Whaledent), Vortex Blue (Dentsply Tulsa Dental Specialties, Tulsa, OK)和TRUShape (Dentsply Tulsa Den

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