Abstract：
Objective: To evaluate the outcome of post space disinfection using Er,Cr:YSGG laser (ECYL), riboflavin photosensitizer (RFP), and photon-induced photoacoustic streaming (PIPS) along with ethylene diamine tetra acetic acid (EDTA) as final irrigant on the bond values of glass fiber post (GFP) to the canal wall. Materials and methods: Forty human mandibular premolars were subjected to root canal treatment after decoronation till the cementoenamel junction. Post space was prepared using a Gates-Glidden drill leaving 4 mm of gutta perch at the apical third of the root section. Random allocation of samples was performed into four groups based on the post space disinfection (n = 10 each): Group 1: 1% RFP and 17% EDTA, group 2: 5.25% sodium hypochlorite (NaOCl) and 17% EDTA (control), group 3: PIPS and 17% EDTA, and group 4: ECYL and 17% EDTA. GFP was luted using Rely X Unicem. A universal testing machine and stereomicroscope were used to assess the push-out bond strength (PBS) and failure mode, respectively. Analysis of variance determined the PBS amid different experimental groups at three root levels. Multiple group comparison using means of tested groups was identified using post hoc Tukey. Results: The coronal third of group 2 (5.25% NaOCl +17% EDTA) demonstrated the highest PBS (8.83 ± 0.11 MPa). However, the lowest bond integrity (4.15 ± 0.52 MPa) was displayed in an apical third of group 1 (RFP +17% EDTA). The intergroup comparison revealed that 5.25% NaOCl +17% EDTA at all three levels demonstrated comparable outcomes of PBS with PIPS +17% EDTA and ECYL +17% EDTA specimens (p > 0.05). However, riboflavin +17% EDTA demonstrated the lowest bond strength (p < 0.05). Conclusions: Er,Cr: YSGG and PIPS in combination with 17% EDTA demonstrated comparable outcomes of bond score with those of conventional gold standard irrigation regime 5.25% NaOCl.
摘要：
目的：评估Er后空间消毒的效果，Cr:YSGG激光器(ECYL),核黄素光敏剂（RFP），和光子诱导的光声流（PIPS）以及乙二胺四乙酸（EDTA）作为玻璃纤维桩（GFP）与管壁的键值的最终冲洗剂。材料和方法：整修后对40颗人类下颌前磨牙进行根管治疗，直到牙釉质交界处。使用Gates-Glidden钻制备后空间，在根部的顶端三分之一处留下4毫米的古塔栖息。根据后空间消毒将样品随机分为四组（每组n=10）：第1组：1％RFP和17％EDTA，第2组:5.25%次氯酸钠(NaOCl)和17%EDTA(对照),第三组：PIPS和17%EDTA，和第4组:ECYL和17%EDTA。使用ReyXUnicem表达GFP。通用试验机和立体显微镜用于评估推出粘结强度（PBS）和破坏模式，分别。方差分析确定了不同实验组中三个根水平的PBS。使用事后Tukey鉴定使用测试组的手段的多组比较。结果：第2组的冠状第3组（5.25％NaOCl17％EDTA）显示出最高的PBS（8.83±0.11MPa）。然而,第1组(RFP+17%EDTA)的顶端三分之一显示出最低的粘结完整性(4.15±0.52MPa).组间比较显示,所有三个水平的5.25%NaOCl+17%EDTA证明PBS与PIPS+17%EDTA和ECYL+17%EDTA样本的结果相当(p>0.05)。然而,核黄素+17%EDTA显示出最低的键强度(p<0.05)。结论：呃，Cr：YSGG和PIPS与17％EDTA的组合显示出与常规金标准灌溉方案5.25％NaOCl的粘合评分相当的结果。
