Universität zu Köln

Stimmelmayr, Michael, Gueth, Jan-Frederik, Erdelt, Kurt, Happe, Arndt, Schlee, Markus and Beuer, Florian (2013). Clinical study evaluating the discrepancy of two different impression techniques of four implants in an edentulous jaw. Clin. Oral Investig., 17 (8). S. 1929 - 1936. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1436-3771

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Abstract

Precise implant-supported prosthodontics requires accurate impressions. Many in vitro studies comparing different implant impression techniques were performed. The purpose of this in vivo study was to compare the discrepancy of two different impression techniques of implants clinically. Four implants were inserted nearly bilateral in ten edentulous jaws. From each jaw, two different impressions (A, transfer; B, splinted pick-up) were taken. Respectively two stone casts of each jaw were produced and scan bodies were mounted on the lab analogues to digitize the casts. One scan body of the digitized casts was each superimposed and the deviations of the remaining three scan bodies were measured three dimensionally. The fit of the suprareconstructions was evaluated clinically on both casts and in the mouth. The mean discrepancy of scan body 2 was 192 mu m (+/- 96), 282 mu m (+/- 97) for scan body 3, and 366 mu m (+/- 114) for scan body 4. The discrepancies between two scan bodies were statistically significant (p a parts per thousand currency signaEuro parts per thousand 0.010; ANOVA test). Comparing the data with the span between the scan bodies, a linear regression line could be drawn to show the dependency between the misfit and the length of the span. Clinically, the fit on the cast produced by the splinted pick-up technique was favorable. The discrepancy between the splinted pick-up impression technique and the transfer technique were in a range with clinical influence. For better accuracy of implant-supported prosthodontics, the splinted pick-up technique should be used for impressions of four implants evenly spread in edentulous jaws.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Stimmelmayr, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Gueth, Jan-Frederik UNSPECIFIED UNSPECIFIED UNSPECIFIED Erdelt, Kurt UNSPECIFIED UNSPECIFIED UNSPECIFIED Happe, Arndt UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlee, Markus UNSPECIFIED UNSPECIFIED UNSPECIFIED Beuer, Florian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-472959
DOI:	10.1007/s00784-012-0885-z
Journal or Publication Title:	Clin. Oral Investig.
Volume:	17
Number:	8
Page Range:	S. 1929 - 1936
Date:	2013
Publisher:	SPRINGER HEIDELBERG
Place of Publication:	HEIDELBERG
ISSN:	1436-3771
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SUPPORTED PROSTHESES; ABUTMENT INTERFACE; ACCURACY; FIT Multiple languages Dentistry, Oral Surgery & Medicine Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47295