Reproducibilidad de las medidas cefalométricas en radiografías cefálicas y tomografías de haz de cono

Abstract

This study evaluates the reproducibility of manual cephalometric radiographs cephalic measurements and Cone Beam Tomography (CBCT). 12 dry skulls two Faculties were taken Bucaramanga health, devices were placed in the reference points for the measurements by means of an expert anthropologist, placing 20 points and grabbing 25 linear steps. Cephalic radiographs of both the right and left side posteroanterior and cone beam CT for each of the 12 dry skulls. Performing manual measurements and data analysis validated the Epidata 3.1 software. Data export to Stata R / C version 12.0. The results show that the three researchers presented a good agreement for the variable SN coincide in presenting the highest values of and four variables (Po-Po, Or-Or, Co-Go Left and SN) in measurements made manually in cone beam CT were found as those considered almost perfect correlation coefficients according to Landis and Koch. The reproducibility of manual measurements of cephalometric radiographs cephalic measurements, none of the three researchers a near perfect agreement was observed. We conclude high reproducibility of the measurements performed in cone beam CT. Linear measurements as compared with direct measurements in dry skulls there is greater accuracy in cone beam CT when compared with cephalic shown to have poor reproducibility.