European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
June 2018
Print ISSN:
0965-7452
Electronic ISSN:
2396-8893
Vol:
26
Issue:
2

A Novel Methodology to Validate the Accuracy of Extraoral Dental Scanners and Digital Articulation Systems

Purpose: The aim of the current study is to develop a novel method to investigate the accuracy of 3D scanners and digital articulation systems. Materials and Methods: An upper and a lower poured stone model were created by taking impression of fully dentate male (fifty years old) participant. Titanium spheres were added to the models to allow
for an easily recognisable geometric shape for measurement after scanning and digital articulation. Measurements were obtained using a Coordinate Measuring Machine to record volumetric error, articulation error and clinical effect error. Three scanners were compared, including the Imetric 3D iScan d104i, Shining 3D AutoScan-DS100 and 3Shape D800, as well as their respective digital articulation software packages. Stoneglass Industries PDC digital articulation system was also applied to the Imetric scans for comparison with the CMM measurements. Results: All the scans displayed low volumetric error (p>0.05), indicating that the scanners themselves had a minor contribution to the articulation and clinical effect errors. The PDC digital articulation system was found to deliver the lowest average errors, with good repeatability of results. Conclusion: The new measuring technique in the current study was able to assess the scanning
and articulation accuracy of the four systems investigated. The PDC digital articulation system using Imetric scans was recommended as it displayed the lowest articulation error and clinical effect error with good repeatability. The low errors from the PDC system may have been due to its use of a 3D axis for alignment rather than the use of a best fit.

10.1922/EJPRD_01747Ellakwa10

Article Price
£15.00
Institution Article Price
£
Page Start
75
Page End
84
Authors
Prof. Ayman Ellakwa, Sam Elnajar, Darren Littlefair, Georges Sara

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Survival Rates and Complications for ZirconiaBased Fixed Dental Prostheses in a Period up to 10 Years: A Systematic Review
  2. 54
  3. 61

  1. A Review on Translucent Zirconia
  2. 62
  3. 74

  1. A Novel Methodology to Validate the Accuracy of Extraoral Dental Scanners and Digital Articulation Systems
  2. 75
  3. 84

  1. Surveys of Current Teaching and Practice for Impressions for Complete Dentures
  2. 86
  3. 93

  1. Prosthetic Rehabilitation with Implant-Supported Mandibular Overdenture after Partial Glossectomy and Radiation Therapy: A Case Report
  2. 95
  3. 99