Ceramic bonding to a machined Au-Ti alloy

Kellerhoff, Rolf; Fischer, Jens (2007). Ceramic bonding to a machined Au-Ti alloy. Quintessence international, 38(10), pp. 867-872. Berlin: Quintessenz Verlags-GmbH

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Objective: To assess in vitro the bond strength of a machined surface of a Au-Ti alloy to a veneering ceramic. Method and Materials: Metal strips of the alloy Au 1.7-Ti 0.1-Ir were milled from a semiproduct fabricated by continuous casting and cold forming. For comparison, the same alloy as well as a traditional Au-Pt-Pd-In alloy were used in the as-cast state. Six samples of each group were fabricated for the crack initiation test, according to ISO 9693:1999, by preparing appropriate metal strips that were veneered with ceramic using a standard firing procedure. The crack initiation test was performed in a universal testing machine. Load at fracture was recorded. Means of bond strength were calculated for each group and the results compared by use of a 1-sided Student t test (P < .05). Fracture sites were documented by means of SEM. Results: Bond strength in the 3 groups was in the same order of magnitude. Failure mode was different for both alloys. Failure of the bonding to the Au-Ti alloy predominantly occurred at the alloy-oxide interface, no matter which fabrication process was used. On the Au-Pt-Pd-In alloy, more ceramic residues were observed. Conclusion: The machined alloy Au 1.7-Ti 0.1-Ir provides sufficient bond strength to veneering ceramics, but this has to be proven by a clinical study. (Quintessence Int 2007;38:867-872).

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > School of Dental Medicine > Department of Prosthodontics [discontinued] 04 Faculty of Medicine > School of Dental Medicine > Division of Fixed Prosthodontics [discontinued]
UniBE Contributor:	Kellerhoff, Rolf, Fischer, Jens
Subjects:	600 Technology > 610 Medicine & health
ISSN:	0033-6572
Publisher:	Quintessenz Verlags-GmbH
Language:	English
Submitter:	Eveline Carmen Schuler
Date Deposited:	04 Oct 2013 14:55
Last Modified:	05 Dec 2022 14:17
PubMed ID:	18197327
Web of Science ID:	000254384800010
URI:	https://boris.unibe.ch/id/eprint/23575 (FactScience: 42576)