Universität zu Köln

Rothamel, Daniel, Heinz, Maria, Ferrari, Daniel, Eissing, Alfons, Holtmann, Henrik, Schorn, Lara ORCID: 0000-0002-4301-0693 and Fienitz, Tim (2022). Impact of machined versus structured implant shoulder designs on crestal bone level changes: a randomized, controlled, multicenter study. INT. J. IMPLANT. DENT., 8 (1). TOKYO: SPRINGER JAPAN KK. ISSN 2198-4034

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Abstract

Purpose: The collar region of an implant is its connection to the oral cavity. A balance between osseointegration on one hand and the absence of plaque accumulation on the other hand is necessary for successful implantation. It is yet to be determined which implant collar design, polished or rough, is best to stabilize the crestal bone level, avoiding peri-implantitis and subsequent risk of implant loss. The aim of this study was to investigate the influence of the architecture of the collar region on marginal bone and soft tissue response. Methods: This prospective, randomized, clinically controlled multicenter study included 58 patients undergoing dental implant treatment using a pair of dental implants with either machined or rough-surfaced shoulder regions. Patients were clinically and radiologically examined for bone level height and signs of inflammation after 6, 12 and 24 months. Results: No implant was lost within the 2 years of follow-up (100% survival rate). No significant differences on crestal bone loss (machined neck: 0.61 mm +/- 0.28 mm, rough neck 0.58 mm +/- 0.24 mm) and on soft tissue response (probing depth 3-6 mm with bleeding on probing 7.6% in machined-neck implants and in 8.3% in rough neck implants) were observed between implants with machined and roughened neck after 2 years. Conclusions: Machined and roughened neck implants achieved equally good results concerning peri-implant bone loss, the rate of peri-implantitis and implant survival rate/hard and soft tissue integration. None of the two collar designs showed a clear advantage in peri-implant reaction.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rothamel, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Heinz, Maria UNSPECIFIED UNSPECIFIED UNSPECIFIED Ferrari, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Eissing, Alfons UNSPECIFIED UNSPECIFIED UNSPECIFIED Holtmann, Henrik UNSPECIFIED UNSPECIFIED UNSPECIFIED Schorn, Lara UNSPECIFIED orcid.org/0000-0002-4301-0693 UNSPECIFIED Fienitz, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-668436
DOI:	10.1186/s40729-022-00432-4
Journal or Publication Title:	INT. J. IMPLANT. DENT.
Volume:	8
Number:	1
Date:	2022
Publisher:	SPRINGER JAPAN KK
Place of Publication:	TOKYO
ISSN:	2198-4034
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SURFACE-ROUGHNESS; TITANIUM IMPLANTS; PERI-IMPLANTITIS; IN-VIVO; ABUTMENT CONNECTION; PART 1; COLLAR; COLLAR/MICROGAP; CLASSIFICATION; INTEGRATION Multiple languages Dentistry, Oral Surgery & Medicine Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66843