氧化锆陶瓷表面处理对其与树脂水门汀粘结强度的影响。

Effect of surface treatments of zirconia ceramics on the bond strength to resin cement.

出版信息

J Adhes Dent. 2014 Feb;16(1):49-56. doi: 10.3290/j.jad.a30753.

DOI:10.3290/j.jad.a30753

Abstract

PURPOSE

The purpose of this in vitro study was to evaluate the bond strength of a resin luting cement to zirconia surfaces that had received two novel surface pretreatment methods: etching of a pre-fired overglaze or paste liner on the zirconia substrate.

MATERIALS AND METHODS

Fully sintered zirconia disks were assigned to 6 groups according to the surface pretreatment: firing of 2 layers of paste liner which was then etched with hydrofluoric acid and treated with silane (Liner group); firing of 2 layers of overglaze which were then etched with hydrofluoric acid and treated with silane (glaze group); Rocatec treatment and silane application (Rocatec group); Rocatec treatment followed by ultrasonic cleaning and silanization (ultrasonic-Rocatec group); sandblasted with alumina (alumina group); as-sintered with no pretreatment (control group). Twenty composite resin cylinders were bonded to each group with Panavia F 2.0. Each group was further divided into 2 subgroups (n = 10) for 2 different storage conditions: 24 h water storage or 3 weeks water storage plus 6000 thermocycles between 5°C and 55°C. The shear bond strength was then determined. Statistical analyses with two-way ANOVA were conducted; the level of significance was set at p < 0.05.

RESULTS

At 24 h, the shear bond strength values of all groups except the control showed no statistically significant difference. After artificial aging, the mean bond strength of all groups dropped, but the decrease in the glaze group was not statistically significant. The glaze group showed the highest shear bond strength. However, that was not statistically different from the liner or the Rocatec group without ultrasonic cleaning (p < 0.05). All the control specimens debonded spontaneously after aging. Ultrasonic cleaning after Rocatec treatment caused a reduction in shear bond strength, but the difference was not statistically significant.

CONCLUSION

Both the fired paste liner and overglazed ceramic treated zirconia surfaces provided a strong and durable bond to resin cement under the conditions tested.

摘要

目的

本体外研究的目的是评估两种新型表面预处理方法对氧化锆表面的树脂水门汀粘结强度的影响：在氧化锆基底上预烧过的釉上釉或糊剂层进行蚀刻。

材料与方法

根据表面预处理方法，将完全烧结的氧化锆圆盘分为 6 组：用氢氟酸蚀刻两层糊剂层并进行硅烷处理的（Liner 组）；用氢氟酸蚀刻两层釉上釉并进行硅烷处理的（glaze 组）；用 Rocatec 处理并进行硅烷处理（Rocatec 组）；用 Rocatec 处理后进行超声清洗和硅烷化（ultrasonic-Rocatec 组）；用氧化铝喷砂（alumina 组）；未经预处理烧结（对照组）。每组用 Panavia F 2.0 将 20 个复合树脂圆柱体粘结。每组进一步分为 2 个亚组（n = 10），分别进行 2 种不同的储存条件：24 h 水储存或 3 周水储存加 5°C 至 55°C 之间 6000 次热循环。然后测定剪切粘结强度。采用双因素方差分析进行统计分析；显著性水平设为 p < 0.05。

结果

在 24 h 时，除对照组外，所有组的剪切粘结强度值均无统计学差异。人工老化后，所有组的粘结强度均值均下降，但釉组的下降无统计学意义。釉组的剪切粘结强度最高，但与未经超声清洗的 Liner 组或 Rocatec 组无统计学差异（p < 0.05）。所有对照组试件在老化后均自发脱粘。Rocatec 处理后进行超声清洗会降低剪切粘结强度，但无统计学差异。