Reliability and validity of measurements on digital study models and plaster models

European Journal of Orthodontics
Ralph Philip ReuschlMarc Philipp Dittmer

Abstract

To compare manual plaster cast and digitized model analysis for accuracy and efficiency. Nineteen plaster models of orthodontic patients in permanent dentition were analyzed by two calibrated examiners. Analyses were performed with a diagnostic calliper and computer-assisted analysis after digitization of the plaster models. The reliability and efficiency of different examiners and methods were compared statistically using a mixed model. Statistically significant differences were found for comparisons of all 28 teeth (P < 0.001), mandibular intermolar width (IMW, P = 0.0453), and overjet (P < 0.001 to P = 0.0329). Single-tooth measurements tended to have larger values when measured manually and the SD was between 0.06 and 1.33mm. Digital analyses gave significantly higher values for mandibular IMW and overjet. Less time was needed for digital measurements. Clinical significance of the differences between the methods compared did not appear significant. 3D laser-scanned plaster model analysis appears to be an adequate, reliable, and time saving alternative to analogue model analysis using a calliper.

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Citations

Jul 27, 2017·Dental press journal of orthodontics·Luciana Quintanilha Pires FernandesJonas Capelli
Dec 3, 2017·Clinical Oral Investigations·Kathrin BeckerDieter Drescher
Jul 22, 2020·Journal of Forensic Sciences·Jun Ai ChongAllan Pau
Nov 9, 2017·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Nes NawiNor Atika Ashar
Jul 7, 2017·Imaging Science in Dentistry·Jintana TasanapanontDhirawat Jotikasthira
Jan 21, 2021·Journal of Functional Morphology and Kinesiology·Vincenzo QuinziEnrico Marchetti
Mar 9, 2021·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Taner Ozturk, Ahmet Yagci

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