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Reproducibility between conventional and digital periapical radiography for bone height measurement
Concordancia entre la radiografía periapical convencional y digital para medición de la altura ósea
Palabras clave:
reproducibility of results, periodontics, digital dental radiography, epidemiology. (en)Reproducibilidad de resultados, Periodoncia, Radiografía digital dental, Epidemiología (es)
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Background. Several diagnostic aids are available for bone height measurement. Digital and conventional radiographs are the two ones most used in Dentistry. Few studies accounting for accuracy and precision have been conducted to compare these methods.
Objective. The aim of this study was to estimate reproducibility between conventional and digital periapical radiography in bone height measurement in patients with chronic periodontitis.
Methods. a consistency diagnostic test study was performed. 136 patients with chronic periodontitis were included, selecting the worst prognosis teeth and two radiographs -conventional and digital- were taken for each one. Two experienced and blinded examiners performed radiographic measurements. Reproducibility was obtained through Lin's concordance correlation coefficient by using the statistical package STATA™ for Windows.
Results. Average age was 38.8 (SD: 9.9) and 61.6 % were female patients. 125 pairs of matched radiographs for 1000 measurements were evaluated. Overall reproducibility between the methods for mesial and distal measurements were 0.62 (95% CI: 0.55-0.70) and 0.64 (95% CI: 0.57-0.71) respectively.
Conclusions. Reproducibility between methods was considered poor, including subgroup analysis, therefore, reproducibility between methods is minimal. Usage of these methods in periodontics should be made implementing the whole knowledge of the technical features and the advantages of these systems.
Antecedentes. Diversas ayudas diagnósticas están disponibles para la medición de la altura ósea; las dos más empleadas en odontología son la radiografía periapical convencional y la digital. A la fecha se cuenta con pocos estudios que den cuenta de la precisión y exactitud al compararlos.
Objetivo. Estimar la concordancia entre la radiografía periapical convencional y la digital para la medición de la altura ósea en pacientes con periodontitis crónica.
Métodos. Se realizó un estudio de pruebas diagnósticas de consistencia en 136 pacientes con periodontitis crónica seleccionando el diente con peor pronóstico. Se obtuvieron dos radiografías —convencional y digital— para cada diente y dos examinadores cegados realizaron las mediciones radiográficas. La concordancia se obtuvo con el coeficiente de correlación y concordancia de Lin empleando el paquete Stata para Windows.
Resultados. La edad promedio fue 38.8 años (DE: 9.9) y 61.6% de los pacientes fueron mujeres. Se evaluaron 125 pares de radiografías para 1000 mediciones en total. La concordancia global fue 0.62 (IC 95%: 0.55-0.70) y 0.64 (IC 95%: 0.57-0.71) para las mediciones mesiales y distales respectivamente.
Conclusiones. La concordancia entre los métodos se consideró pobre incluso en el análisis por subgrupos por tanto la reproducibilidad es mínima. El uso de estos métodos en periodoncia debe hacerse empleando el conocimiento completo de las características técnicas y ventajas de estos sistemas.
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Derechos de autor 2015 Revista de la Facultad de Medicina
Esta obra está bajo una licencia Creative Commons Reconocimiento 3.0 Unported.
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