与牙本质粘合的不含 HEMA/BPA 的 1 步和 2 步通用粘合剂的多参数特性分析。

Chuliang Tang, Mohammed H Ahmed, Kumiko Yoshihara, Marleen Peumans, Bart Van Meerbeek
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引用次数: 0

摘要

目的:本研究旨在探讨两种不含 HEMA/BPA 的通用粘合剂(UAs)对扁平牙本质的粘合效果,描述其粘合剂-牙本质界面的超微结构,并测量其吸水性(Wsp)、水溶性(Wsl)和疏水性:测量不含 HEMA/BPA 的 UAs Healbond Max (HbMax; Elsodent) 和 Healbond MP (HbMP; Elsodent),以及参考粘合剂 OptiBond FL (Opti-FL; Kerr)、Clearfil SE Bond 2 (C-SE2; Kuraray Noritake) 和 Scotchbond Universal (SBU; 3M Oral Care)与扁平牙本质的即时和老化(50,000 热循环)微拉伸粘接强度(μTBS)。用 TEM 表征了 HbMax 和 HbMP 的粘合剂-牙本质界面。测量了所有粘合剂树脂以及 HbMax、Opti-FL 和 C-SE2 底漆/粘合剂树脂混合物的 Wsp 和 Wsl。通过测量水滴在粘合剂处理过的牙本质上的接触角来确定疏水性:就 µTBS 而言,HbMax 和 HbMP 的统计性能与 Opti-FL 和 C-SE2 相似,但优于 SBU。只有在采用 E&R 粘接模式时,老化才会明显降低 SBU 的 µTBS 值。TEM 在牙本质处发现了典型的 E&R 和 SE 混合层超微结构,而在 HbMP 的粘合树脂中观察到了大小和形状各异的电子透明球状物,在 HbMax 的粘合树脂中更常见。与粘合剂树脂相比,底漆/粘合剂树脂混合物的 Wsp 测量值更高。Opti-FL 的疏水性高于所有其他受测粘合剂:结论:不含 HEMA/BPA 的 UA 与扁平牙本质的粘接强度与黄金标准的 E&R/SE 粘合剂相当,优于含 HEMA/BPA 的 1 步 UA。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multi-Parameter Characterization of HEMA/BPA-free 1- and 2-step Universal Adhesives Bonded to Dentin.

Purpose: This study aimed to investigate the bonding effectiveness of two HEMA/BPA-free universal adhesives (UAs) to flat dentin, to characterize their adhesive-dentin interfacial ultrastructure, and to measure their water sorption (Wsp), water solubility (Wsl), and hydrophobicity.

Materials and methods: The immediate and aged (50,000 thermocycles) microtensile bond strength (μTBS) to flat dentin of the HEMA/BPA-free UAs Healbond Max (HbMax; Elsodent) and Healbond MP (HbMP; Elsodent) as well as the reference adhesives OptiBond FL (Opti-FL; Kerr), Clearfil SE Bond 2 (C-SE2; Kuraray Noritake), and Scotchbond Universal (SBU; 3M Oral Care) was measured. The adhesive-dentin interfaces of HbMax and HbMP were characterized by TEM. Wsp and Wsl of all adhesive resins and of the primer/adhesive resin mixtures of HbMax, Opti-FL, and C-SE2 were measured. Hydrophobicity was determined by measuring the contact angle of water dropped on adhesive-treated dentin.

Results: In terms of µTBS, HbMax and HbMP performed statistically similarly to Opti-FL and C-SE2, but outperformed SBU. Aging only significantly reduced the μTBS of SBU when applied in E&R bonding mode. TEM revealed typical E&R and SE hybrid-layer ultrastructures at dentin, while electron-lucent globules of unknown origin, differing in size and shape, were observed within the adhesive resin of HbMP and even more frequently in that of HbMax. Higher Wsp was measured for the primer/adhesive resin mixtures than for the adhesive resins. Opti-FL was more hydrophobic than all other adhesives tested.

Conclusion: The HEMA/BPA-free UAs bonded durably to flat dentin with bond strengths comparable to those of the gold-standard E&R/SE adhesives and superior to that of the HEMA/BPA-containing 1-step UA.

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