In vitro comparison of the accuracy of four intraoral scanners and three conventional impression methods for two neighboring implants.

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  • Additional Information
    • Source:
      Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
    • Publication Information:
      Original Publication: San Francisco, CA : Public Library of Science
    • Subject Terms:
      Dental Implants* ; Dental Impression Technique* ; Models, Dental*; Imaging, Three-Dimensional
    • Abstract:
      Purpose: To determine whether the accuracy of two-implant model impressions taken with optical scanners was inferior to that of those taken with elastomeric materials.
      Materials and Methods: Impressions of a resin reference model with two almost parallel implants were taken using three elastomeric impressions (closed tray technique, open tray nonsplinted technique and open tray splinted technique) and scanned with four optical scanners (CEREC Omnicam, 3M True Definition Scanner, 3Shape TRIOS3 and Carestream CS 3600). STL files of the different methods were superimposed and analyzed with control software (Geomagic Control X, 3D systems) to determine the mean deviation between scans.
      Results: Compared to elastomeric impressions, optical impressions showed a significantly improved mean precision. TRIOS3 and CS3600 showed a significantly improved mean trueness compared to that of closed tray, CEREC Omnicam and TrueDefinition. All methods showed a certain degree of implant rotation over their axes, which was significantly higher in the closed tray and the open tray nonsplinted techniques.
      Conclusions: Optical impressions, taken under these in vitro conditions, showed improved accuracy compared with that of elastomeric impressions.
      Competing Interests: The authors have declared that no competing interests exist.
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    • Accession Number:
      0 (Dental Implants)
    • Publication Date:
      Date Created: 20200228 Date Completed: 20200424 Latest Revision: 20211204
    • Publication Date:
      20231215
    • Accession Number:
      PMC7046187
    • Accession Number:
      10.1371/journal.pone.0228266
    • Accession Number:
      32106275