Reproducibilidad de medidas digitales y manuales en un análisis sagital y transversal en modelos de dentición temporal

Abstract

Introduction: Digitization and 3D image processing facilitate clinical practice, simplifying the treatment plan and processes for the clinician and the patient in an organized manner. Objective: To determine the reproducibility of measurements taken manually on plaster models of pediatric patients compared to those taken on digitized models. Materials and methods: A reproducibility study was carried out taking 204 models. Manual measurements were taken: intermolar distance and intercanine distance in the models with the digital Boley caliper and arch perimeter with orthodontic wire. Digital images were obtained with the Ineos X5 Scanner (Sirona CAD/CAM scanner), measurements were taken with Autodesk Software. A descriptive analysis was carried out, as well as the Intraclass Correlation Coefficient (ICC) was calculated to verify the reproducibility between the measurements and the Bland & Altman limits of agreement in the STATA 14.0 program. Results: The average age of the subjects was 3.84 ±0.64, 51.96% (n=53) were women. The greatest reproducibility was obtained in distance inferior intermolar distance, Intraclass Correlation Coefficient, ICC=0.96, 95% CI: 0.94-0.97, while the measurement with the least reproducibility was obtained in inferior intercanine distance, ICC= 0.80, 95% CI: 0.73-0.87. Conclusions: A high degree of reproducibility and agreement was found between the measurements of the manual and digital models. The measure with the highest agreement was the lower intermolar distance with a high coefficient that is considered an almost perfect reproducibility.