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:
CreatorsEmailORCIDORCID Put Code
Nickenig, Hans-JoachimUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wichmann, ManfredUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Happe, ArndtUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zoeller, Joachim E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eitner, StephanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
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:
KeywordsLanguage
DENTAL IMPLANTS; CRESTAL BONE; TITANIUM IMPLANTS; HISTOMETRIC EVALUATION; SUBMERGED IMPLANTS; SOFT-TISSUES; DOGS; PRESERVATION; MICROGAP; LOCATIONMultiple languages
Dentistry, Oral Surgery & Medicine; SurgeryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/47476

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