Retreatability of three calcium silicate-containing sealers and one epoxy resin-based root canal sealer with four different root canal instruments
Retreatability of three calcium silicate-containing sealers and one epoxy resin-based root canal sealer with four different root canal instruments
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DOI：
10.1007/s00784-017-2156-5
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发表时间：
2018-03-01
影响因子：
3.4
通讯作者：
Dammaschke, Till
中科院分区：
文献类型：
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作者：
Donnermeyer, David;Bunne, Clarissa;Dammaschke, Till
本研究的目的是比较三种含硅酸钙封闭剂（BioRoot RCS、MTA Fillapex、Endo C. P.M.）用环氧树脂基根管预备器（AH Plus）和不同根管器械（Hedstrom锉、Reciproc R40、Mtwo再处理锉R25/.05 + Mtwo 40/.06、F6 SkyTaper）对192颗患牙进行根管预备，观察根管预备后牙体残留量和再处理时间。所有根管均采用Reciproc R40牙胶和其中一种封闭剂的单锥技术进行充填（n = 48/根管）。两个月后，使用其中一种所述仪器进行再治疗（每种仪器n = 12）。将根纵向分开，并使用光学显微镜对两半进行研究。采用ImageJ软件评价根管壁覆盖的牙根残留物百分比。记录再治疗所需的时间。统计学分析采用双因素方差分析和Student-Newman-Keuls事后检验，两因素方差分析结果显示，根管充填残留物的百分比和再治疗时间对结果有显著影响（p < 0.001），而器械对结果有显著影响（p < 0.05）。总体而言，与所有其他封闭器相比，使用AH Plus会产生更多残留物（p < 0.001），并且F6 SkyTaper器械的再治疗速度比其他器械快得多（p < 0.05）。与AH Plus相比，含硅酸钙的封闭器的再治疗能力更好，因为观察到的封闭器残留物更少，再治疗时间更短。与手动器械相比，发动机驱动的镍钛器械更适合于去除根管充填物。
The objective of the study was to compare the retreatability of three calcium silicate-containing sealers (BioRoot RCS, MTA Fillapex, Endo C.P.M.) and an epoxy resin-based sealer (AH Plus) with different root canal instruments (Hedstrom files, Reciproc R40, Mtwo retreatment file R 25/.05 + Mtwo 40/.06, and F6 SkyTaper) concerning sealer remnants and retreatment time.Root canals of 192 teeth were instrumented with Reciproc R40. All root canals were obturated using the single-cone technique with Reciproc R40 gutta-percha and one of the sealers (n = 48 per sealer). Two months later, retreatment was performed using one of the mentioned instruments (n = 12 per instrument and sealer). The roots were split longitudinally, and both halves were investigated using light microscopy. The percentage of sealer remnants covering the root canal wall was evaluated using the software ImageJ. The time required for retreatment was recorded. Statistical analysis was performed using two-way ANOVA and Student-Newman-Keuls post hoc test.Regarding the percentage of root canal filling remnants as well as retreatment time, two-way ANOVA indicated that the results were significantly affected by the sealer (p < 0.001) and by the instrument used (p < 0.05). Overall, the use of AH Plus was associated with significantly more remnants compared to all other sealers (p < 0.001) and F6 SkyTaper instruments allowed significantly faster retreatment than the other instruments (p < 0.05).The retreatability of calcium silicate-containing sealers was better compared to AH Plus as less sealer remnants and shorter retreatment times were observed. Retreatment with engine-driven NiTi instruments was superior compared to hand instrumentation.Engine-driven NiTi instruments are better suited to remove root canal fillings than stainless steel Hedstrom files.