Resumo (EN)
Introduction – During the execution of a radiography, precepts that seek to reduce the distortions and inherent enlargements of the technique should be proceeded, as focal distances, film-object and the patient’s positioning. The aim of this study was to verify if alterations in the film-object distance alter significantly cephalometric data. Material and Methods – Two cephalometic radiographs of metallic spheres were executed in the Planmeca Proline XC machine, being one with 7 cm film-object distance and other with distance of 14 cm. The computerized cefalometric data were accomplished and their values compared. Results – The obtained values in each analysis didn’t show significant differences and they didn’t alter the interpretation of the cephalometric pattern used in this study. Conclusion – In the used apparatus, the increase of the film-object distance from 7 to 14 cm doesn’t interfere in the cephalometric analysis.