Diagnóstico de modelos de yeso vs digitales: exactitud y fiabilidad en la comparación del análisis de bolton y sus mediciones correspondientes

Abstract

Actually the use of more sophisticated tools in orthodontics such as digital software and digital studio models, has provided greater facility for the diagnosis, treatment planning and manufacture of appliances; changing the traditional approach to measurement, and eliminate the disadvantages that represents the physical storage. The aim of this study was to compare the accuracy and reliability of Bolton index and corresponding measurements between manual and digital methods of study models. The study included 50 patient study models of orthodontic postgraduate of the University of Cuenca, whereby for the manual measuring (gold standard) was employed a digital Vernier caliper Mitutoyo with 0.01mm accuracy. For digital method was used an optical laser scanner Optical RevEng and the measurements with an orthodontic software Nemocast 3D. The reproducibility of both methods was calculated by Student's t test, and reliability by Pearson's correlation coefficient. The statistical significance level was set at 0.05. Results: All results showed excellent correlation of both methods, the t test indicated that there are significant differences between the two methods except anteroinferior sum and anterior Bolton. Conclusion: Although the reproducibility of both methods showed mostly statistically significant differences; precision, accuracy and reliability of the two methods was high and clinically irrelevant