Ezzie Elie, Fleury Alex, Solomon Eric, Spears Robert, He Jianing
Department of Endodontics, Baylor College of Dentistry, The Texas A&M University System Health Science Center, Dallas, Texas 75246, USA.
J Endod. 2006 Apr;32(4):341-4. doi: 10.1016/j.joen.2005.09.010. Epub 2006 Feb 17.
Resilon/Epiphany obturation system is emerging as an alternative to gutta-percha (GP). The efficacy of retreatment techniques for Resilon removal has not been determined. The purpose of this study was to evaluate two commonly used retreatment techniques in the removal of Resilon. Sixty single-canal teeth were instrumented and obturated with either Resilon/Epiphany or GP/AH Plus. Each canal was randomly allocated to receive one of the two retreatment techniques-ProFile 0.06 rotary files combined with heat or chloroform. The time required to remove the obturation material was recorded and the cleanliness of canal walls was determined by stereomicroscope and electron microscopy. The results demonstrated that chloroform combined with rotary files was more efficient in material removal compared to heat (p < 0.05). Resilon was faster to remove than GP. Both techniques resulted in cleaner canal walls in the apical third of the teeth obturated with Resilon when compared to GP (p < 0.05).
Resilon/Epiphany充填系统正逐渐成为牙胶尖（GP）的一种替代物。Resilon取出再治疗技术的疗效尚未确定。本研究的目的是评估两种常用的Resilon取出再治疗技术。60颗单根管牙齿用Resilon/Epiphany或GP/AH Plus进行预备和充填。每个根管随机分配接受两种再治疗技术之一——Profile 0.06旋转锉结合加热或氯仿。记录取出充填材料所需的时间，并通过体视显微镜和电子显微镜确定根管壁的清洁度。结果表明，与加热相比，氯仿结合旋转锉在材料去除方面更有效（p < 0.05）。Resilon比GP更容易取出。与GP相比，两种技术在用Resilon充填的牙齿根尖三分之一处都能使根管壁更清洁（p < 0.05）。
