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      Comparación de medidas dentales y transversales realizadas en modelos de yeso con calibrador digital, y en modelos digitales con el software o3d Translated title: Comparison of dental and transversal measurements made on plaster model using a digital caliper and in digital model using the o3d software

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          Abstract

          Resumen Introducción y objetivo: Las medidas y análisis de modelos son esenciales para el diagnóstico de casos de ortodoncia. Actualmente, el análisis de modelos puede ser realizado de manera virtual a través de software de computador como el o3d. El objetivo de este estudio fue evaluar la reproductibilidad, confiabilidad y validez de medidas dentales y transversales en modelos digitales usando el software o3d y compararlas con las medidas obtenidas con el calibrador digital en modelos de yeso. Materiales y métodos: Treinta pares de modelos fueron escaneados y digitalizados. Dos examinadores midieron el tamaño dentario, distancia intercanina y distancia intermolar en modelos de yeso usando un calibrador digital y en modelos digitales usando el software o3d. Los datos fueron analizados usando el Coeficiente de Correlación Intraclase, prueba t pareada, la fórmula de Dahlberg y el análisis de varianza. Resultados: Excelente reproductibilidad intra e interexaminador fue observada en las medidas realizadas con el calibrador digital y el software o3d. No se presentaron errores aleatorios con ninguno de los dos métodos y el error sistemático fue más frecuente en los modelos digitales. Conclusión: El software o3d presentó un buen desempeño en términos de reproductibilidad, confiabilidad y validez en la medición del tamaño dentario y distancias transversales; aunque los métodos presentaron diferencias estadísticas, la magnitud de esa diferencia es clínicamente irrelevante.

          Translated abstract

          Abstract Introduction and objetive: Measurements and analyses of dental casts are essential for precise diagnosis of an orthodontic case. At present, analyses of dental casts can be performed virtually, through computer software as o3d. The aim of this study was to evaluate the reproducibility, reliability and validity of measurements made in digital models using the o3d software compared to plaster models. Materials and methods: Thirty pair of plaster casts were scanned and digitized. Two examiners measured tooth size, intercanine distance and intermolar distance in a plaster model with a digital caliper and in a digital model using the o3d software system. The data were statistically analyzed by Intraclass Correlation Coefficient test, paired samples t test, Dahlberg's formula and analysis of variance. Results: Excellent intraexaminer and interexaminer agreement was observed in the measurments performed with digital caliper and o3d software. No random error was present in the measurements obtained with the digital caliper and o3d software; systematic error was more frequent in the digital casts. Conclusion: The o3d software presented a good performance in terms of reproducibility, reliability and validity in measuring tooth size and transverse distance. Although measurements made on plaster and digital models showed statistically significant differences, the magnitude of the differences does not appear to be clinically relevant.

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          Most cited references12

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          Evaluation of the use of digital study models in postgraduate orthodontic programs in the United States and Canada

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            Comparison of measurements made on digital and plaster models

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              Reproducibility, reliability and validity of measurements obtained from Cecile3 digital models

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                ceso
                CES Odontología
                CES odontol.
                Universidad CES - Facultad de Odontología
                0120-971X
                December 2015
                : 28
                : 2
                : 58-68
                Article
                S0120-971X2015000200006
                70532808-a26f-48a9-bf6e-a3a23e089115

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                Product

                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0120-971X&lng=en
                Categories
                SOCIAL SCIENCES, INTERDISCIPLINARY

                Sociology
                Modelos dentales,ortodoncia,reproductibilidad de los resultados,validez de las pruebas,Dental models,orthodontics,reproducibility of results,validity of tests

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