Avaliação da reprodutibilidade de medidas cefalométricas em diferentes monitores

Abstract

Since there are a variety of brands, models and image display sizes in the market, and it is the main responsible for landmark in digital cephalometric, it is necessary to confirm the diagnosis is not changed. The aim of this study was to evaluate the reproducibility of cephalometric analyzes when performed on different monitors. A single calibrated examiner made the landmark in McNamara cephalometric analysis in 5 different monitors (14', 18.5', 26', 32' and 40'). The measurements were repeated twice in different sessions in order to evaluate the reproducibility. The intraclass correlation coefficients (ICC) showed that there was excellent agreement between the two landmarkings of the examiner, except for points "Po" and "Or". ANOVA was used to compare the monitors. Statistical data suggested that the measures were reproducible on all monitors, although the smaller display size and technical specifications of brightness and lower contrast proved to be less accurate, especially at points considered more subjective in markup. Given the results of this study, we recommend the use of monitors from 18 ', brightness of 500 cd / m² and contrast of 60,000: 1 for better reproducibility of the data.