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Accuracy of digital duplication scanning methods for complete dentures.

Abdullah Alehaideb1, Wei-Shao Lin1, John A Levon1

  • 1Department of Prosthodontics, Indiana University School of Dentistry, Indianapolis, Indiana, USA.

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
|November 4, 2023
PubMed
Summary

Digital scanning methods like the Straumann desktop scanner (DS) and Trios intraoral scanner (TIO) offer higher accuracy for duplicating complete dentures compared to cone beam computed tomography (CBCT) and Virtuo Vivo intraoral scanner (VVIO). TIO demonstrated superior precision overall.

Keywords:
denture duplicationdigital dentistryintraoral scanprecisiontrueness

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Area of Science:

  • Digital dentistry
  • Prosthodontics
  • Biomaterials engineering

Background:

  • Accurate duplication of complete dentures is crucial for effective patient treatment.
  • Digital scanning technologies offer potential improvements in efficiency and accuracy over traditional methods.

Purpose of the Study:

  • To evaluate and compare the accuracy of four digital scanning methods for complete denture duplication.

Main Methods:

  • Four digital scanning methods were assessed: cone beam computed tomography (CBCT), Straumann desktop scanner (DS), Trios intraoral scanner (TIO), and Virtuo Vivo intraoral scanner (VVIO).
  • Each method scanned a printed complete denture 10 times, capturing all surfaces.
  • Trueness (root mean square, RMS) and precision (standard deviation, SD) were calculated against a reference file.

Main Results:

  • Cone beam computed tomography (CBCT) exhibited the lowest trueness and highest RMS for overall denture accuracy.
  • The Straumann desktop scanner (DS) and Trios intraoral scanner (TIO) demonstrated significantly higher trueness and lower RMS compared to CBCT and Virtuo Vivo intraoral scanner (VVIO).
  • Trios 4 (TIO) showed the highest precision across combined surfaces, while DS and TIO were more precise for denture extension surfaces.

Conclusions:

  • Desktop and intraoral scanners (DS and TIO) provide superior trueness for complete denture duplication compared to CBCT and VVIO.
  • The Trios 4 intraoral scanner offers the highest precision for combined surfaces, with DS and TIO also showing high precision for denture extension surfaces.