Influence of impression material and time on the 3-dimensional accuracy of implant impressions

Stefan Holst, Markus B. Blatz, Michael Bergler, Matthias Goellner, Manfred Wichmann

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Objective: To investigate, in vitro, the effect of time on the 3-dimensional accuracy of open-tray implant impression copings made of polyvinyl siloxane and polyether impression materials. Method and Materials: Reference models with 4 internal connection implants were fabricated. Four sets of 71 direct impressions were made with square impression copings using an open-tray technique. One set of impressions was made with polyether material (material A) and each of 3 polyvinyl siloxane materials (materials B, C, and D). Three-dimensional changes in spatial orientation of the implant analogs were measured over 48 hours using an optical measurement device. Deviation values were summed over 4 points and averaged per impression. Global differences were tested with a nonparametric Kruskal-Wallis test followed by pairwise comparisons using the Mann-Whitney U test. Results: The mean dimensional accuracy of implant impressions significantly differed over time (P < .001). Materials A and B were found to produce comparable results. For materials C and D there was a significant increase in deviations, with a maximum increase at 2 hours. Deviations for material C were comparable to materials A and B at 48 hours. Baseline values were not maintained by any material. Conclusions: Within the limits of this in vitro study, it can be concluded that time cannot be neglected as a factor affecting the accuracy of implant master casts.

Original languageEnglish (US)
Pages (from-to)67-73
Number of pages7
JournalQuintessence international
Volume38
Issue number1
StatePublished - Jan 1 2007

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Optical Devices
Nonparametric Statistics
vinyl polysiloxane
In Vitro Techniques

Keywords

  • Dental implant
  • Impression material
  • Master cast
  • Optical measurement
  • Polyether
  • Polyvinyl siloxane
  • Precision
  • Three-dimensional distortion

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Holst, S., Blatz, M. B., Bergler, M., Goellner, M., & Wichmann, M. (2007). Influence of impression material and time on the 3-dimensional accuracy of implant impressions. Quintessence international, 38(1), 67-73.

Influence of impression material and time on the 3-dimensional accuracy of implant impressions. / Holst, Stefan; Blatz, Markus B.; Bergler, Michael; Goellner, Matthias; Wichmann, Manfred.

In: Quintessence international, Vol. 38, No. 1, 01.01.2007, p. 67-73.

Research output: Contribution to journalArticle

Holst, S, Blatz, MB, Bergler, M, Goellner, M & Wichmann, M 2007, 'Influence of impression material and time on the 3-dimensional accuracy of implant impressions', Quintessence international, vol. 38, no. 1, pp. 67-73.
Holst S, Blatz MB, Bergler M, Goellner M, Wichmann M. Influence of impression material and time on the 3-dimensional accuracy of implant impressions. Quintessence international. 2007 Jan 1;38(1):67-73.
Holst, Stefan ; Blatz, Markus B. ; Bergler, Michael ; Goellner, Matthias ; Wichmann, Manfred. / Influence of impression material and time on the 3-dimensional accuracy of implant impressions. In: Quintessence international. 2007 ; Vol. 38, No. 1. pp. 67-73.
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