J Korean Acad Pediatr Dent.  2020 Nov;47(4):416-426. 10.5933/JKAPD.2020.47.4.416.

Lateral Cephalometric Measurement of Skeletal Class III malocclusion Patients with Uncertainty

Affiliations
  • 1Department of Pediatric Dentistry, School of Dentistry, Seoul National University

Abstract

The purpose of this study was to calculate uncertainty of orthodontic measurement in skeletal class III malocclusion children using lateral cephalometry analysis software which obtained traceability in previous study. Using this data, standard reference of measurement value for skeletal class III malocclusion was obtained.
Lateral cephalometric data was collected from 144 children who visited Pediatric Dentistry from 2017 to 2020 for orthodontic treatment. Orthodontic measurement was analyzed with software which obtained traceability. Type A evaluation of uncertainty and type B evaluation of uncertainty was calculated to obtain combined standard uncertainty and expanded uncertainty. Standard reference of skeletal class III children was compared to standard reference of skeletal class I children.
Distribution range for skeletal class III malocclusion children aged 6 to 10 with 95% confidence interval was provided using calculated uncertainty of orthodontic measurement value.

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