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首页> 外文期刊>Microscopy research and technique >The effect of a root-dentin pretreatment technique combining PIPS with MTAD aiming to improve the bond strength of glass fiber post
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The effect of a root-dentin pretreatment technique combining PIPS with MTAD aiming to improve the bond strength of glass fiber post

机译：根牙本肽预处理技术与MTAD的旨在提高玻璃纤维柱粘合强度的影响

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摘要

The aim of this study was to evaluate the combined effect of MTAD and photon-induced photoacoustic streaming (PIPS) technique on the smear layer removal and the bond strength of glass fiber post. Fifty-five human mandibular premolars were chosen. After root canal therapy and post space preparation, the teeth were equally divided to five groups according to the methods of root-dentin pretreatment: G1: distilled water (control); G2: 2.5% NaOCl+17% EDTA; G3: MTAD; G4: PIPS; G5: MTAD+PIPS. One sample was randomly selected from each group, and scanning electron microscope (SEM) was used to observe the microscopic morphology of the coronal, middle and apical level of the root-dentin. The remaining ten samples from each group were glued to glass fiber posts, and the bond strength was assessed by push-out test. SEM evaluation showed that the most complete smear layer removal was found in MTAD + PIPS group, especially in coronal third. Push-out test results exhibited that there was a statistically significant interaction between the experimental groups and root canal third (p < .0005). Significant differences could be found among five groups (p < .05): G5 > G4 > G3 > G2 > G1. G5 had the highest bond strength. In conclusion, post space pretreatments with MTAD or PIPS technique can significantly remove smear layer and improve the bond strength of glass fiber post, and combination of them works best.
机译：本研究的目的是评估MTAD和光子诱导的光声流（PIPS）技术对玻璃纤维柱的涂抹层去除和粘合强度的综合作用。选择了55个人的下颌骨前磨牙。在根管治疗和后空间制备后，牙齿根据根牙本肽预处理的方法等于五组：G1：蒸馏水（对照）; G2：2.5％NaoCl + 17％EDTA; G3：MTAD; G4：PIPS; G5：MTAD + PIPS。从每组中随机选择一个样品，并且使用扫描电子显微镜（SEM）来观察根牙本质的冠状，中间和顶点的微观形态。将来自每组的剩余的10个样品粘在玻璃纤维柱中，通过推出试验评估粘合强度。 SEM评估表明，在MTAD + PIPS组中发现了最完整的涂片层，尤其是在冠状中心中。推出试验结果表明，实验组和根管之间存在统计学上有显着的相互作用（P <.0005）。五组（P <0.05）：G5> G4> G3> G2之间可以发现显着差异。 G5有最高的债券强度。总之，使用MTAD或PIPS技术的后空间预处理可以显着地清除涂片层并改善玻璃纤维柱的粘合强度，并将其组合最佳。

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