Roggendorf Matthias J, Roggendorf Hubert C, Müller-Krott Markus, Faber Franz-Josef, Frankenberger Roland
Clinic for Operative Dentistry, Endodontics, and Pediatric Dentistry, University Dental Medicine, Philipps University Marburg and University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Straße 3, 35039 Marburg, Germany.
Interdisciplinary Department of Oral Surgery and Implantology, University of Cologne, Kerpener Straße 32, 50931 Cologne, Germany.
Dent J (Basel). 2025 Sep 9;13(9):415. doi: 10.3390/dj13090415.
: We aimed to assess the bond strength of AH Plus Jet (AH) and an epoxy resin-based root canal sealer prototype (K-0189) adhered to three different obturation points. : A total of 120 single-rooted teeth were selected after radiographic analysis, and their root canals were instrumented with ProTaper Next files (PTN) up to size X5. The teeth were randomly assigned to two sealer groups (G) (G1: AH, G2: K-0189, each n = 60) and further divided into three subgroups: (A) ConformFit X5 points (PTN) cold obturation (CO), (B) ProTaper Universal F5 points (PTU) (CO), (C) GuttaCore X5 (GC) warm obturation (WO). After final irrigation (NaOCl 3%, EDTA 17%, NaOCl 3%) and drying, root canals were obturated and stored for 30 days at 37 °C in Simulated Body Fluid (SBF). The specimens were embedded in acrylate and sectioned horizontally; then, push-out bond strength (POBS) analysis was performed. : The median POBS values [MPa] were G1A: 2.03; G1B: 2.12; G1C: 3.2; G2A: 1.91; G2B: 2.56; and G2C: 3.36. WO showed significantly higher POBS ( < 0.001 *) than CO. The POBS was not significantly different between the two WO groups ( = 0.508). The POBS of G2B was significantly higher compared to all other CO groups. : The epoxy resin sealer prototype demonstrated POBS values comparable to AH Plus when used with WO and PTU points, indicating significantly higher POBS values compared to all other CO points.
我们旨在评估AH Plus Jet（AH）和一种环氧树脂基根管封闭剂原型（K - 0189）与三种不同充填点的粘结强度。
经影像学分析后共选取120颗单根牙，其根管使用ProTaper Next锉（PTN）预备至X5号。将牙齿随机分为两个封闭剂组（G）（G1：AH，G2：K - 0189，每组n = 60），并进一步分为三个亚组：（A）ConformFit X5点（PTN）冷充填（CO），（B）ProTaper Universal F5点（PTU）（CO），（C）GuttaCore X5（GC）热充填（WO）。在最终冲洗（3%次氯酸钠、17%乙二胺四乙酸、3%次氯酸钠）和干燥后，对根管进行充填，并在37℃的模拟体液（SBF）中储存30天。将标本嵌入丙烯酸树脂并水平切片；然后进行推出粘结强度（POBS）分析。
POBS值的中位数[MPa]为：G1A：2.03；G1B：2.12；G1C：3.2；G2A：1.91；G2B：2.56；G2C：3.36。热充填显示出比冷充填显著更高的POBS（<0.001*）。两个热充填组之间的POBS无显著差异（=0.508）。G2B组的POBS与所有其他冷充填组相比显著更高。
当与热充填和PTU点一起使用时，环氧树脂封闭剂原型的POBS值与AH Plus相当，表明与所有其他冷充填点相比，其POBS值显著更高。
