预制贴面——粘结强度和超微形态分析。

Prefabricated veneers - bond strengths and ultramorphological analyses.

出版信息

J Adhes Dent. 2014 Apr;16(2):137-46. doi: 10.3290/j.jad.a30689.

DOI:10.3290/j.jad.a30689

Abstract

PURPOSE

To measure the microshear bond strengths (μSBS) of composite resin to the intaglio surface of prefabricated indirect veneers and analyze the FE-SEM ultramorphology of the pretreated intaglio surfaces as well as the fracture modes.

MATERIALS AND METHODS

Three veneer systems (veneer and respective luting material) were used in this study: two prefabricated veneer types, Cerinate One-hour (CER, DenMat) and Componeer (CMP, Coltene), and a laboratory- made veneer, IPS e.max Press (IPS, Ivoclar Vivadent) used as the control. For each group, 10 veneers were used. After delimitation of the bonding area with a double-faced adhesive tape, 0.8-mm-diameter cylinders of composite luting material were bonded to the pretreated intaglio surface. After polymerization, the specimens were fractured in shear mode using the wire-loop method in a universal testing machine. The pretreated intaglio surface of two extra veneers and four fractured specimens per group were morphologically characterized using FE-SEM.

RESULTS

CER resulted in statistically lower mean μSBS (7.1 ± 1.2 MPa) than the other two veneer systems, CMP (15.2 ± 2.5 MPa) and IPS (14.7 ± 1.7 MPa) at p < 0.0001. As seen with the FE-SEM, the intaglio surface of CMP did not display microretentive features, while multiple microretentions were observed in both CER and IPS after HF etching.

CONCLUSION

Within the limitations of this in vitro study, the CMP and IPS veneer systems resulted in greater bond strengths than those of the CER veneer system.

摘要

目的

测量复合树脂与预制间接贴面印模面的微剪切结合强度（μSBS），分析预处理印模面的 FE-SEM 超微形态以及断裂模式。

材料和方法

本研究使用了三种贴面系统（贴面及其相应的粘固材料）：两种预制贴面类型，Cerinate One-hour（CER，登士柏）和 Componeer（CMP，科尔泰），以及一种实验室制作的贴面，IPS e.max Press（IPS，义获嘉伟瓦登特）作为对照。每组使用 10 个贴面。用双面胶带划定粘结区域后，将 0.8 毫米直径的复合粘固材料圆柱体粘结到预处理的印模表面。聚合后，使用万能试验机的线环法以剪切模式将样品断裂。每组额外的两个贴面和四个断裂标本的预处理印模面使用 FE-SEM 进行形态特征描述。

结果

CER 的平均 μSBS（7.1 ± 1.2 MPa）明显低于其他两种贴面系统，CMP（15.2 ± 2.5 MPa）和 IPS（14.7 ± 1.7 MPa）（p < 0.0001）。如 FE-SEM 所见，CMP 的印模面没有显示微观保留特征，而 HF 蚀刻后在 CER 和 IPS 中均观察到多个微观保留。