Department of Endodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey.
Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
Odontology. 2024 Jul;112(3):739-750. doi: 10.1007/s10266-024-00928-y. Epub 2024 Mar 20.
This study aims to investigate glycolic acid (GA) as a final irrigant on push-out bond strength of fiber post and smear removal. Ninety mandibular premolars were stabilized with a silicone key and photographed, and canal cross-section was calculated by image processing software. Round canal morphology was selected. The specimens were divided into five groups (n = 18); 10%GA, 17%EDTA, NaOCl + 10%GA, NaOCl + 17%EDTA, and the control. Fifteen specimens were used for the push-out. Three specimens were evaluated using a scanning electron microscope after post space preparation. Two-way ANOVA and Chi-square were used for statistics. GA presented higher strength than EDTA (p < 0.05). The NaOCl + GA showed higher strength than the NaOCl + EDTA (p < 0.05). The highest values were observed in cervical and lowest in apical thirds (p < 0.05). The most failure type was between dentin and resin (p < 0.05). GA removed the smear in the post space including the apical third. The NaOCl + GA has superiority to NaOCl + EDTA on push-out strength. Glycolic acid improved the bond strength of fiber post when used as a final post space irrigant. The combination of NaOCl and glycolic acid did not negatively affect the bond strength and was more effective compared to the combination with EDTA. Glycolic acid improved the bond strength of fiber post when used as a final post space irrigant. The combination of NaOCl and glycolic acid did not negatively affect the bond strength and was more effective compared to the combination with EDTA.
本研究旨在探讨甘醇酸（GA）作为纤维桩最后冲洗剂对纤维桩黏结强度和玷污层去除的影响。90 颗下颌前磨牙用硅橡胶固位剂固定并拍照，用图像处理软件计算根管横截面。选择圆形根管形态。将样本分为 5 组（n=18）：10%GA、17%EDTA、次氯酸钠+10%GA、次氯酸钠+17%EDTA 和对照组。15 个样本用于推出试验。根管预备后，用扫描电子显微镜评估 3 个样本。采用双因素方差分析和卡方检验进行统计学分析。GA 的强度高于 EDTA（p<0.05）。次氯酸钠+GA 的强度高于次氯酸钠+EDTA（p<0.05）。在近中颈和根尖 1/3 处，强度最高，在根尖 3/1 处，强度最低（p<0.05）。最常见的失败类型是牙本质和树脂之间（p<0.05）。GA 能去除包括根尖 1/3 在内的纤维桩内玷污层。与次氯酸钠+EDTA 相比，次氯酸钠+GA 对推出强度具有优势。GA 作为最后根管冲洗剂能提高纤维桩的黏结强度。与 EDTA 相比，次氯酸钠和 GA 的组合对黏结强度没有负面影响，且效果更好。GA 作为最后根管冲洗剂能提高纤维桩的黏结强度。与 EDTA 相比，次氯酸钠和 GA 的组合对黏结强度没有负面影响，且效果更好。
