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Pioneering Patient-Specific Approaches for Precision Surgery Using Imaging and Virtual Reality
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Linear measurements using virtual study models.

Nghe S Luu1, Liliya G Nikolcheva, Jean-Marc Retrouvey

  • 1Orthodontic Graduate Program, School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada.

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|April 26, 2012
PubMed
Summary
This summary is machine-generated.

Virtual study models demonstrate high reliability and validity for linear measurements, comparable to traditional plaster models. These findings support their clinical acceptability in dental and orthodontic applications.

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Area of Science:

  • Dental and orthodontic research
  • Digital imaging and modeling

Background:

  • Traditional plaster study models have been the standard for linear measurements in dentistry.
  • Advancements in digital technology have introduced virtual study models as an alternative.

Purpose of the Study:

  • To systematically review and assess the reliability and validity of linear measurements using virtual versus plaster study models.
  • To compare measurement accuracy between different virtual model acquisition types and landmark utilization.

Main Methods:

  • A comprehensive literature search was conducted across four databases, supplemented by hand searching.
  • Seventeen eligible studies were selected based on predefined criteria.
  • Data were analyzed for reliability and validity of linear measurements, grouped by virtual model acquisition and landmark number, with weighting by sample size.

Main Results:

  • High intrarater reliability was observed for linear measurements on virtual models (laser- or CBCT-acquired) with two or more landmarks, comparable to plaster models.
  • Validity was also high, with clinically insignificant weighted mean differences between virtual and plaster models.
  • Measurement agreement was excellent, showing less variability than correlation; acquisition type did not influence reliability or validity.

Conclusions:

  • Virtual study models are clinically acceptable for selected linear measurements.
  • They offer comparable intrarater reliability and validity to traditional plaster models.