Universität zu Köln

Stimmelmayr, Michael, Edelhoff, Daniel, Gueth, Jan-Frederik, Erdelt, Kurt, Happe, Arndt and Beuer, Florian (2012). Wear at the titanium-titanium and the titanium-zirconia implant-abutment interface: A comparative in vitro study. Dent. Mater., 28 (12). S. 1215 - 1221. OXFORD: ELSEVIER SCI LTD. ISSN 0109-5641

Full text not available from this repository.

Abstract

Objective. The purpose of this study was to determine and measure the wear of the interface between titanium implants and one-piece zirconia abutments in comparison to titanium abutments. Methods. 6 implants were secured into epoxy resin blocks. The implant interface of these implants and 6 corresponding abutments (group Zr: three one-piece zirconia abutments; group Ti: three titanium abutments) were examined by a microscope and scanning electron micrograph (SEM). Also the implants and the abutments were scanned by 3D-Micro Computer Tomography (CT). The abutments were connected to the implants and cyclically loaded with 1,200,000 cycles at 100 N in a two-axis fatigue testing machine. Afterwards, all specimens were unscrewed and the implants and abutments again were scanned by microscope, SEM and CT. The microscope and SEM images were compared, the CT data were superimposed and the wear was calculated by inspection software. The statistical analysis was carried out with an unpaired t-test. Results. Abutment fracture or screw loosening was not observed during cyclical loading. Comparing the microscope and SEM images more wear was observed on the implants connected to zirconia abutments. The maximum wear on the implant shoulder calculated by the inspection software was 10.2 mu m for group Zr, and 0.7 mu m for group Ti. The influence of the abutment material on the measured wear was statistically significant (p <= 0.001; Levene-test). Significance. Titanium implants showed higher wear at the implant interface following cyclic loading when connected to one-piece zirconia implant abutments compared to titanium abutments. The clinical relevance is not clear; hence damage of the internal implant connection could result in prosthetic failures up to the need of implant removal. (C) 2012 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Stimmelmayr, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Edelhoff, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Gueth, Jan-Frederik UNSPECIFIED UNSPECIFIED UNSPECIFIED Erdelt, Kurt UNSPECIFIED UNSPECIFIED UNSPECIFIED Happe, Arndt UNSPECIFIED UNSPECIFIED UNSPECIFIED Beuer, Florian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-478263
DOI:	10.1016/j.dental.2012.08.008
Journal or Publication Title:	Dent. Mater.
Volume:	28
Number:	12
Page Range:	S. 1215 - 1221
Date:	2012
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	0109-5641
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SOFT-TISSUE; RESTORATIONS Multiple languages Dentistry, Oral Surgery & Medicine; Materials Science, Biomaterials Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47826