一种新型CAD/CAM贱金属与传统钴铬钼合金的比较：金属陶瓷长期结合强度的体外研究

A novel CAD/CAM base metal compared to conventional CoCrMo alloys: an in-vitro study of the long-term metal-ceramic bond strength.

作者信息

Stawarczyk Bogna, Eichberger Marlis, Hoffmann Rita, Noack Falko, Schweiger Josef, Edelhoff Daniel, Beuer Florian

机构信息

Goethestrasse 70, 80336 Munich, Germany, Tel: 0049 89 4400 59573; e-mail:

出版信息

Oral Health Dent Manag. 2014 Jun;13(2):446-52.

PMID:24984663

Abstract

OBJECTIVES

This study examined the metal-ceramic bond strength between different ceramics and a novel CAD/CAM base metal alloy as well as conventional CoCrMo alloys.

METHODS

Three different base metal alloys were tested: a novel CAD/CAM milled and sintered alloy (MS), a. laser sintered alloy (LS), and a cast alloy (C). Specimens for the Schwickerath crack initiation test according to ISO 9693:2012 were prepared and veneered using the following veneering ceramics: i. Creation (Willy Geller), ii. VITA VM13 (VITA Zahnfabrik), and iii. Reflex (Wieland+Dental). The specimens were subsequently thermally aged (5,000 cycles, 5°C/55°C, dwell time: 20 s) and the bond strength was measured in a universal testing machine (Zwick 1445, 1 mm/min). Data were analyzed using two-way and one-way ANOVA, followed by a post hoc Scheffé test.

RESULTS

For the veneering ceramics VITA VM13 and Reflex, no impact of the used alloy on bond strength results was found (p=0.124-0.393). In contrast, the veneering ceramic Creation showed significantly higher bond strength values in combination with MS and LS than with C (p=0.001). For MS (p<0.001) and LS (p=0.001) alloys veneered with Reflex, significantly lower bond strengths were observed than for specimens veneered with Creation or VITA VM13. Within C alloy (p=0.012), significantly lower bond strengths were measured for specimens veneered with Reflex than for VITA VM13.

CONCLUSION

The novel CAD/CAM base metal alloy Ceramill Sintron showed comparable metal-ceramic bond strength compared to conventional CoCrMo alloys.

摘要

目的

本研究检测了不同陶瓷与一种新型计算机辅助设计/计算机辅助制造（CAD/CAM）贱金属合金以及传统钴铬钼合金之间的金属-陶瓷结合强度。

方法

测试了三种不同的贱金属合金：一种新型CAD/CAM铣削烧结合金（MS）、一种激光烧结合金（LS）和一种铸造合金（C）。根据ISO 9693:2012制备用于施维克拉特裂纹起始试验的试样，并用以下饰面陶瓷进行贴面：i. Creation（威利·盖勒）；ii. VITA VM13（维他齿科）；iii. Reflex（威兰德+牙科）。随后对试样进行热老化（5000次循环，5℃/55℃，保压时间：20秒），并在万能试验机（Zwick 1445，1毫米/分钟）上测量结合强度。使用双向和单向方差分析对数据进行分析，随后进行事后谢费检验。

结果

对于饰面陶瓷VITA VM13和Reflex，未发现所用合金对结合强度结果有影响（p = 0.124 - 0.393）。相比之下，饰面陶瓷Creation与MS和LS结合时的结合强度值明显高于与C结合时（p = 0.001）。对于用Reflex贴面的MS合金（p < 0.001）和LS合金（p = 0.001），观察到的结合强度明显低于用Creation或VITA VM13贴面的试样。在C合金中（p = 0.012），用Reflex贴面试样的结合强度明显低于用VITA VM13贴面的试样。