Effect of 2 impression techniques on the dimensional accuracy of working implant prosthesis models

An in vitro study

Gaetano Calesini, Fernando Zarone, Roberto Sorrentino, Costanza Micarelli, Andrea Fabianelli, Federica Papacchini, Enrico Gherlone

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

PURPOSE: Implant impressions and working models form integrated precision systems for registration and transmission of clinical data. The components of implant systems have a dimensional tolerance capable of introducing inaccuracies in the impression, thus in the prosthetic framework. This article aimed at comparing 2 repositioning impression techniques: one using impression copings (conventional technique) and the other using the final abutments as impression copings (interceptive technique). MATERIALS AND METHODS: Two experimental models, one with 4 parallel implants and the other with 4 nonparallel implants, were used to make silicone impressions. Twenty impressions were made with the conventional technique, and a further 20 were made with the interceptive technique. Three-dimensional images acquired with a three-dimensional scanner were measured using a three-dimensional image analysis software, comparing models obtained from the impressions with the experimental models. Data were statistically analyzed by means of confidence intervals calculated with the mean (α = 0.05), descriptive (box plot), and bivariate analyses. RESULTS: Statistic analysis highlighted significant differences among models obtained using both techniques: the interceptive technique generated working models with less distortion and variability. CONCLUSIONS: For internal-connection implants, the interceptive technique provided significantly more precise working models than did the conventional technique.

Original languageEnglish
Pages (from-to)822-827
Number of pages6
JournalJournal of Craniofacial Surgery
Volume25
Issue number3
DOIs
Publication statusPublished - 2014

Fingerprint

Three-Dimensional Imaging
Prostheses and Implants
Theoretical Models
Silicones
Software
Confidence Intervals
In Vitro Techniques

Keywords

  • Implant prosthesis
  • Impression technique
  • Interceptive impression
  • Internal connection
  • Precision

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Surgery

Cite this

Effect of 2 impression techniques on the dimensional accuracy of working implant prosthesis models : An in vitro study. / Calesini, Gaetano; Zarone, Fernando; Sorrentino, Roberto; Micarelli, Costanza; Fabianelli, Andrea; Papacchini, Federica; Gherlone, Enrico.

In: Journal of Craniofacial Surgery, Vol. 25, No. 3, 2014, p. 822-827.

Research output: Contribution to journalArticle

Calesini, Gaetano ; Zarone, Fernando ; Sorrentino, Roberto ; Micarelli, Costanza ; Fabianelli, Andrea ; Papacchini, Federica ; Gherlone, Enrico. / Effect of 2 impression techniques on the dimensional accuracy of working implant prosthesis models : An in vitro study. In: Journal of Craniofacial Surgery. 2014 ; Vol. 25, No. 3. pp. 822-827.
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