不同表面处理方法对钛粘结剂粘结强度的影响。

The effect of different surface treatments on the shear bond strength of luting cements to titanium.

机构信息

Department of Dental Materials and Prosthodontics, Araraquara Dental School, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil.

出版信息

J Prosthet Dent. 2012 Dec;108(6):370-6. doi: 10.1016/S0022-3913(12)60194-2.

DOI:10.1016/S0022-3913(12)60194-2

PMID:23217469

Abstract

STATEMENT OF PROBLEM

Although titanium presents attractive physical and mechanical properties, there is a need for improving the bond at the titanium/luting cement interface for the longevity of metal ceramic restorations.

PURPOSE

The purpose of this study was to evaluate the effect of surface treatments on the shear bond strength (SBS) of resin-modified glass ionomer and resin cements to commercially pure titanium (CP Ti).

MATERIAL AND METHODS

Two hundred and forty CP Ti cast disks (9.0 × 3.0 mm) were divided into 8 surface treatment groups (n=30): 1) 50 µm Al(2)O(3) particles; 2) 120 µm Al(2)O(3) particles; 3) 250 µm Al(2)O(3) particles; 4) 50 µm Al(2)O(3) particles + silane (RelyX Ceramic Primer); 5) 120 µm Al(2)O(3) particles + silane; 6) 250 µm Al(2)O(3) particles + silane; 7) 30 µm silica-modified Al(2)O(3) particles (Cojet Sand) + silane; and 8) 120 µm Al(2)O(3) particles, followed by 110 µm silica-modified Al(2)O(3) particles (Rocatec). The luting cements 1) RelyX Luting 2; 2) RelyX ARC; or 3) RelyX U100 were applied to the treated CP Ti surfaces (n=10). Shear bond strength (SBS) was tested after thermal cycling (5000 cycles, 5°C to 55°C). Data were analyzed by 2-way analysis of variance (ANOVA) and the Tukey HSD post hoc test (α=.05). Failure mode was determined with a stereomicroscope (×20).

RESULTS

The surface treatments, cements, and their interaction significantly affected the SBS (P<.001). RelyX Luting 2 and RelyX U100 exhibited similar behavior for all surface treatments. For both cements, only the group abraded with 50 μm Al(2)O(3) particles had lower SBS than the other groups (P<.05). For RelyX ARC, regardless of silane application, abrasion with 50 μm Al(2)O(3) particles resulted in significantly lower SBS than abrasion with 120 μm and 250 μm particles, which exhibited statistically similar SBS values to each other. Rocatec + silane promoted the highest SBS for RelyX ARC. RelyX U100 presented the highest SBS mean values (P<.001). All groups showed a predominance of adhesive failure mode.

CONCLUSIONS

The adhesive capability of RelyX Luting 2 and RelyX U100 on the SBS was decisive, while for RelyX ARC, mechanical and chemical factors were more influential.

摘要

问题陈述

尽管钛具有吸引人的物理和机械性能，但仍需要改善钛/水门汀界面的结合强度，以提高金属陶瓷修复体的寿命。

目的

本研究的目的是评估不同表面处理方法对商用纯钛（CP Ti）与树脂改良型玻璃离子水门汀和树脂粘结剂之间剪切粘结强度（SBS）的影响。

材料和方法

将 240 个 CP Ti 铸造圆盘（9.0×3.0mm）分为 8 个表面处理组（n=30）：1）50μmAl2O3 颗粒；2）120μmAl2O3 颗粒；3）250μmAl2O3 颗粒；4）50μmAl2O3 颗粒+硅烷（RelyX Ceramic Primer）；5）120μmAl2O3 颗粒+硅烷；6）250μmAl2O3 颗粒+硅烷；7）30μm 硅烷改性 Al2O3 颗粒（Cojet Sand）+硅烷；8）120μmAl2O3 颗粒，然后用 110μm 硅烷改性 Al2O3 颗粒（Rocatec）进行打磨。粘结剂 1）RelyX Luting 2；2）RelyX ARC；或 3）RelyX U100 被应用于处理后的 CP Ti 表面（n=10）。经过热循环（5000 次循环，5°C 至 55°C）后，测试剪切粘结强度（SBS）。数据采用双因素方差分析（ANOVA）和 Tukey HSD 事后检验（α=.05）进行分析。用立体显微镜（×20）确定失效模式。

结果

表面处理、粘结剂及其相互作用均显著影响 SBS（P<.001）。RelyX Luting 2 和 RelyX U100 对所有表面处理均表现出相似的行为。对于两种粘结剂，只有用 50μmAl2O3 颗粒打磨的组的 SBS 低于其他组（P<.05）。对于 RelyX ARC，无论是否使用硅烷，用 50μmAl2O3 颗粒打磨的组的 SBS 均显著低于用 120μm 和 250μm 颗粒打磨的组，后两者的 SBS 值彼此统计学上相似。用 Rocatec+硅烷处理可提高 RelyX ARC 的 SBS。RelyX U100 表现出最高的 SBS 平均值（P<.001）。所有组均以黏附性失效模式为主。