Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry.
Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine.
Dent Mater J. 2021 Jul 31;40(4):928-933. doi: 10.4012/dmj.2020-272. Epub 2021 Mar 27.
This study evaluated the bonding effectiveness of a newly developed two-step hydrophobic bonding material. Three groups using different bonding systems were compared: BZF group, using the new bonding system (BZF-29; GC, Tokyo, Japan); GPB group, using a one-step bonding system (G-Premio Bond; GC); and SE2 group, using a two-step bonding system (CLEARFIL SE Bond 2; Kuraray Noritake Dental, Tokyo, Japan). Microtensile bond strength (µTBS) was measured after storage in water for 24 h, 3 months and 6 months (n=25/group). Fracture surfaces were observed under scanning electron microscopy. The BZF group showed significantly higher µTBS than the other groups (p<0.001). Dominant failure patterns were cohesive failure for the BZF group (48-84%), mixed failure for the SE2 group (48-60%) and interface failure between adhesive and resin composite for the GPB group (48-52%). The hydrophobicity of the BZF-29 bonding system improves the long-term bonding effectiveness between adhesive and resin composite.
本研究评估了一种新型两步疏水性粘结材料的粘结效果。比较了使用不同粘结系统的三组：BZF 组，使用新的粘结系统（BZF-29；GC，东京，日本）；GPB 组，使用一步粘结系统（G-Premio Bond；GC）；SE2 组，使用两步粘结系统（CLEARFIL SE Bond 2；Kuraray Noritake Dental，东京，日本）。在水中储存 24 h、3 个月和 6 个月后（每组 n=25）测量微拉伸粘结强度（µTBS）。在扫描电子显微镜下观察断裂面。BZF 组的 µTBS 明显高于其他组（p<0.001）。BZF 组主要为粘结内聚性断裂（48-84%），SE2 组为混合性断裂（48-60%），GPB 组为粘结剂和树脂复合材料之间的界面性断裂（48-52%）。BZF-29 粘结系统的疏水性提高了粘结剂和树脂复合材料之间的长期粘结效果。
