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  • Title: An evaluation of three implant level impression techniques for single tooth implant.
    Author: Daoudi MF, Setchell DJ, Searson LJ.
    Journal: Eur J Prosthodont Restor Dent; 2004 Mar; 12(1):9-14. PubMed ID: 15058176.
    Abstract:
    This laboratory study investigated the hypotheses that there is no difference between three implant level impression techniques using vinyl polysiloxane impression material. The tested techniques were 1)- the repositioning technique. 2)-The pickup technique. 3)- The pickup technique with the impression copings splinted to the impression trays with autopolymerising acrylic resin. The Reflex Microscope was used for 3D measurement of distances and angles. Analysis of variance and Tukey's multiple comparisons test were applied to analyse the data. The results showed significant differences in implant analogue position with the repositioning and the pickup (unsplinted) impression techniques from the master model. Alarming rotational errors were recorded with the repositioning and the pickup (unsplinted) techniques. However, connecting the impression coping to the impression tray improves the accuracy of the pickup impression technique.
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