Journal of Prevention and Treatment for Stomatological Diseases ›› 2020, Vol. 28 ›› Issue (3): 158-162.DOI: 10.12016/j.issn.2096-1456.2020.03.004

• Basic Study • Previous Articles     Next Articles

Comparison of the interdiffusion of four self-etching adhesives in resin-aged glass-fiber-reinforced composites

CHEN Zao1,CHEN Lu1,LIU Qi2,WU Buling2()   

  1. 1. Department of Stomatology, Zhongshan Hospital of Traditional Chinese Medicine, Zhongshan 528400, China
    2. College of Stomatology, Southern Medical University, Guangzhou 510515, China
  • Received:2019-02-09 Revised:2019-12-15 Online:2020-03-20 Published:2020-03-20
  • Contact: Buling WU

四种自酸蚀粘接剂在老化玻璃纤维增强树脂中的渗透比较

陈造1,陈露1,刘琦2,吴补领2()   

  1. 1. 中山市中医院口腔科,广东 中山(528400)
    2. 南方医科大学口腔医学院,广东 广州(510515)
  • 通讯作者: 吴补领
  • 作者简介:陈造,副主任医师,学士,Email:chenzao001@126.com
  • 基金资助:
    广东省自然科学基金(201803031041);南方医科大学南方医院院长基金(2017B020)

Abstract:

Objective To observe the permeability of four kinds of self-etching adhesives in aged glass-fiber-reinforced composite (GFRC). Methods After light polymerization following the manufacturers’ instructions, a total of 80 pieces of bisphenol-A-glycodal-methacrylate (Bis-GMA)+ polymethyl methacrylate (PMMA) based GFRC were randomly divided into two main groups: test group and control group, each group was then divided into four subgroups with 10 samples for each subgroup. While the test group was conducted to be aged through thermocycling at 5 ℃/55 ℃, the control group remained fresh. After the addition of a fluorescent dye (rhodamine-B-isothiocyanate), four self-etching adhesives AdperEasy One (AEO), S 3 BOND (S 3B), Tetric N-Bond Self-Etch (TNB), G-Bond (GB) were correspondently applied to the test and control groups and were light polymerized. Specimens were sectioned using hard tissue cutting and grinding system. Slices from each subgroup were observed under a confocal laser scanning microscope, the depth of dye permeation (DDP) under the surface of GFRC in each group was measured and the Results were statistically analyzed. Results The DDP of AEO was the deepest (32.58 ± 6.06) μm, and that of TNB was the shallowest (6.19 ± 1.38)μm among the four self-etching adhesive subgroups in the control group. The order of each group was AEO > GB > S 3B > TNB. The DDP of the four subgroups in the test group was significantly shallower than that in the control group (P < 0.05). The change in GB was the greatest (9.05 ± 2.35)μm/(28.93 ± 5.32)μm. In the test group, the DDP in AEO was the deepest (28.42 ± 5.32)μm, and the DDP in TNB was shallowest (1.93 ± 0.22)μm again. The order of each group was AEO > S 3B > GB > TNB. In the test group, while the layer of fluorescent dye of AEO and S 3 B could still be seen distinctly, that of TNB and GB was hard to recognize. Conclusion The self-etching adhesives of AEO and S 3 B still have good permeation effect in this kind of aged GFRC, which can help to establish a good bond between these aged GFRC and the subsequent repair of composite resin.

Key words: self-etch adhesive, depth of permeation, glass-fiber reinforced composite resin, aging, fluorescent staining, confocal laser scanning microscope

摘要:

目的 观察4种自酸蚀粘接剂在老化玻璃纤维增强树脂(glass fiber-reinforce composite,GFRC)中的渗透表现。方法 80个以双酚A-双甲基丙烯酸缩水甘油酯和聚甲基丙烯酸甲酯为基质的GFRC样本光固化后按随机分组法分成实验组、对照组2大组,每大组4亚组,每亚组10个样本。实验组GFRC样本以5 ℃/55 ℃冷热循环方式老化,对照组GFRC样本不老化。在实验组和对照组GFRC样本表面分别涂擦加入了荧光剂的4种自酸蚀粘接剂AdperEasy One(AEO)、S 3 BOND(S 3B)、Tetric N-Bond Self-Etch(TNB)、G-Bond(GB),光固化。运用硬组织切磨系统切片,共聚焦激光扫描显微镜观察GFRC表面荧光剂渗透的深度,将结果进行统计学分析。结果 对照组各亚组中以AEO荧光渗透深度最大(32.58 ± 6.06)μm,TNB最浅(6.19 ± 1.38)μm,依次为AEO > GB > S 3B > TNB。实验组各亚组荧光剂渗透深度均较对照组显著变浅(P < 0.05),GB变化最显著(9.05 ± 2.35)μm/(28.93 ± 5.32)μm。实验组AEO荧光渗透深度最深(28.42 ± 5.32)μm,TNB最浅(1.93 ± 0.22)μm,依次为AEO > S 3B > GB > TNB。实验组中AEO、S 3 B的荧光剂层仍清晰易见,TNB、GB的荧光剂层则难以辨别。结论 AEO和S 3B在该种老化GFRC中仍有较好的渗透效果,是其老化修复时较好的选择。

关键词: 自酸蚀粘接剂, 渗透深度, 玻璃纤维增强树脂, 老化, 荧光染色, 共聚焦激光扫描显微镜

CLC Number: