Easy and Unbiased Determination of the Maxillary Sinus Volume

determining the volume of the maxillary sinus is necessary in certain procedures. we present a simple method for estimating the volume of the maxillary sinus from groups 3, 5 and 9 coronal ct scan using the cavalieri method combined with systematic sampling and evaluated randomized images. we used 10 dry skulls submitted to the tc. the actual volume was determined using silicone adapted to the maxillary sinus cavity. the estimated volume showed a high correlation with real volume, with no differences between groups. we concluded that it is possible to estimate without bias and with high accuracy the volume of the maxillary sinus from a minimum of 3 ct images obtained through randomized systematic sampling and the proposed method.