Characterization of a surface-treated Au-Ag-Cu-based dental metal-ceramic alloy

It is known that the quality of metal-ceramic restorations mainly depends on the interface strength. The aim of the study was to evaluate metal–ceramic interfaces of heat pressed ceramic on Co-Cr frameworks obtained with different technologies: melting-casting (CST), computerized milling (MIL), selective laser sintering (SLS) and selective laser melting (SLM). The microstructure of metal–ceramic interfaces and framework topography were characterized by scanning electron microscope (SEM). Sandblasted, polished surfaces and the cross section on the interfaces were observed. Sandblasted surfaces presented a uniform rough aspect and pronounced porous surface compared to that of polished surfaces and were better visible in SLS and SLM samples. The thickness of the veneer layer had a noticeable effect on the interface, because in the case of thicker veneers, cracks at the interfaces were visible for CST and MIL specimens. Considering the findings reported herein, some suggestions can be considered in practice, such as adaptation of the restorations morphology to the characteristics of the processed materials.

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Characterization of dental metal–ceramic interfaces immersed in artificial saliva after substructural mechanical metallization with titanium

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2010.07.116 ◽

2010 ◽

Vol 205 (3) ◽

pp. 787-792 ◽

Cited By ~ 12

Author(s):

Júlio C.M. Souza ◽

Rubens M. Nascimento ◽

Antonio E. Martinelli

Keyword(s):

Artificial Saliva ◽

Metal Ceramic ◽

Dental Metal ◽

Ceramic Interfaces

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Characterization of particle concentration in indentation-deformed metal-ceramic composites

Materials Characterization ◽

10.1016/j.matchar.2004.08.006 ◽

2004 ◽

Vol 53 (5) ◽

pp. 373-380 ◽

Cited By ~ 18

Author(s):

R. Pereyra ◽

Y.-L. Shen

Keyword(s):

Particle Concentration ◽

Ceramic Composites ◽

Metal Ceramic

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Processing and Elastic Property Characterization of Porous SiC Preform for Interpenetrating Metal/Ceramic Composites

Journal of the American Ceramic Society ◽

10.1111/j.1551-2916.2012.05347.x ◽

2012 ◽

Vol 95 (10) ◽

pp. 3078-3083 ◽

Cited By ~ 18

Author(s):

Siddhartha Roy ◽

Karl Günter Schell ◽

Ethel Claudia Bucharsky ◽

Pascal Hettich ◽

Stefan Dietrich ◽

...

Keyword(s):

Elastic Property ◽

Ceramic Composites ◽

Metal Ceramic ◽

Porous Sic ◽

Property Characterization

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Measurement of Plasticity Gradients with Scanning Probe Microscopy

MRS Proceedings ◽

10.1557/proc-318-401 ◽

1993 ◽

Vol 318 ◽

Author(s):

James D. Kiely ◽

Dawn A. Bonnell

Keyword(s):

Fracture Surface ◽

Scanning Probe Microscopy ◽

Scanning Probe ◽

Scanning Tunneling ◽

Ceramic System ◽

Force Microscopy ◽

Metal Fracture ◽

Atomic Force ◽

Metal Ceramic

ABSTRACTScanning Tunneling and Atomic Force Microscopy were used to characterize the topography of fractured Au /sapphire interfaces. Variance analysis which quantifies surface morphology was developed and applied to the characterization of the metal fracture surface of the metal/ceramic system. Fracture surface features related to plasticity were quantified and correlated to the fracture energy and energy release rate.

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