Universität zu Köln

Nickenig, Hans-Joachim, Wichmann, Manfred, Happe, Arndt, Zoeller, Joachim E. and Eitner, Stephan (2013). A 5-year prospective radiographic evaluation of marginal bone levels adjacent to parallel-screw cylinder machined-neck implants and rough-surfaced microthreaded implants using digitized panoramic radiographs. J. Cranio-MaxilloFac. Surg., 41 (7). S. 564 - 569. EDINBURGH: CHURCHILL LIVINGSTONE. ISSN 1878-4119

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Abstract

Objective: The purpose of this split-mouth study was to compare macro- and microstructure implant surfaces at the marginal bone level over five years of functional loading. Materials and methods: From January to February 2006, 133 implants (70 rough-surfaced microthreaded implants and 63 machined-neck implants) were inserted in the mandible of 34 patients with Kennedy Class I residual dentitions and followed until December 2011. Marginal bone level was radiographically determined at six time points: implant placement (baseline), after the healing period, after six months, and at two years, three years, and five years follow-up. Results: Median follow-up time was 5.2 years (range: 5.1-5.4). The machined-neck group had a mean crestal bone loss of 0.5 mm (0.0-23) after the healing period, 1.1 mm (0.0-3.0) at two years follow-up, and 1.4 mm (0.0-2.9) at five years follow-up. The rough-surfaced microthreaded implant group had a mean bone loss of 0.1 mm (-0.4 to 2.0) after the healing period, 0.5 mm (0.0-2.1) at two years follow-up, and 0.7 mm (0.0-2.3) at five years follow-up. The two implant types showed significant differences in marginal bone levels. Conclusions: Rough-surfaced microthreaded design caused significantly less loss of crestal bone levels under long-term functional loading in the mandible when compared to machined-neck implants. (C) 2012 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Nickenig, Hans-Joachim UNSPECIFIED UNSPECIFIED UNSPECIFIED Wichmann, Manfred UNSPECIFIED UNSPECIFIED UNSPECIFIED Happe, Arndt UNSPECIFIED UNSPECIFIED UNSPECIFIED Zoeller, Joachim E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eitner, Stephan UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-474769
DOI:	10.1016/j.jcms.2012.11.027
Journal or Publication Title:	J. Cranio-MaxilloFac. Surg.
Volume:	41
Number:	7
Page Range:	S. 564 - 569
Date:	2013
Publisher:	CHURCHILL LIVINGSTONE
Place of Publication:	EDINBURGH
ISSN:	1878-4119
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DENTAL IMPLANTS; CRESTAL BONE; TITANIUM IMPLANTS; HISTOMETRIC EVALUATION; SUBMERGED IMPLANTS; SOFT-TISSUES; DOGS; PRESERVATION; MICROGAP; LOCATION Multiple languages Dentistry, Oral Surgery & Medicine; Surgery Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47476