目的:评估各种表面处理和粘合剂对氧化锆基陶瓷与牙本质的粘结强度的有效性。
方法:对80个氧化锆样品进行了四表面处理方案(喷砂,48%氢氟酸(HF),48%氢氟酸+70%硝酸(HNO3)和不处理(对照),随后将来自每组的样品基于用于胶结的树脂水泥(RelyXU200和G-CemLinkforce)细分为两个子组(n=10)。使粘结的试样经受剪切应力以使用万能试验机测量粘结强度。为了测试八个研究组之间的粘结强度差异,应用Kruskal-Wallis方差分析检验,并比较各组水泥,采用Mann-WhitneyU检验。
结果:用G-CemLinkforce树脂水泥胶结的48%HF组观察到最高的粘结强度值(16.220±1.574),而对照组RelyX最低(4.954±0.972)。除了48%HF+70%硝酸外,G-Cem水泥在所有表面处理中均显示出比RelyX更高的粘结强度。
结论:可以推断,48%的HF可以蚀刻氧化锆并产生多孔结构,该多孔结构被证明对粘合有益。
结论:对美学的不断增长的需求导致用氧化锆基陶瓷代替金属陶瓷材料。然而,氧化锆对各种常规表面处理剂的化学惰性不断挑战研究人员发现一种新的表面处理方案,可以提高氧化锆的结合强度。如何引用这篇文章:YenamandraMS,约瑟夫A,辛格·P,etal.氧化锆的各种表面处理对其对牙本质的粘附性能的影响:体外研究。JContempDentPract2024;25(3):226-230。
OBJECTIVE: To assess the effectiveness of various surface treatments and adhesives on the bond strength of zirconia-based ceramic to dentin.
METHODS: Eighty samples of zirconia were subjected to the four-surface treatment protocols (sandblasting, 48% hydrofluoric acid (HF), 48% hydrofluoric acid + 70% nitric acid (HNO3) and no treatment (control) following which the samples from each group were subdivided into two subgroups (n = 10) based on the resin cement employed for cementation (RelyX U200 and G-Cem Linkforce). The bonded specimens were subjected to shear stress to measure the bond strength using Universal testing machine. To test the difference in bond strength among the eight study groups, the Kruskal-Wallis ANOVA test was applied and for comparison between cements in each group, Mann-Whitney U test was applied.
RESULTS: The highest bond strength values were observed for 48% HF group cemented with G-Cem Linkforce resin cement (16.220 ± 1.574) and lowest for control group-RelyX (4.954 ± 0.972). G-Cem cement showed higher bond strength than RelyX for all surface treatments except 48% HF + 70% nitric acid.
CONCLUSIONS: It can be inferred that 48% HF can etch zirconia and generate a porous structure that proves to be beneficial for bonding.
CONCLUSIONS: The increasing demand for esthetics has led to the replacement of metal-ceramic materials with zirconia-based ceramics. However, the chemical inertness of zirconia to various conventional surface treating agents has continuously challenged researchers to discover a new surface treatment protocol that could enhance the bond strength of zirconia. How to cite this article: Yenamandra MS, Joseph A, Singh P, et al. Effect of Various Surface Treatments of Zirconia on its Adhesive Properties to Dentin: An In Vitro Study. J Contemp Dent Pract 2024;25(3):226-230.