The comparison of vertical height and width of maxillary sinus by means of Waters' view radiograms taken from dentate and edentulous cases.

In the present study the vertical height and width of the maxillary sinus were measured by means of standardized Waters' view radiographs taken from 30 dentate and 30 edentulous subjects. All patients were healthy and were in the same age group of 35 to 40 years. Male and female ratios were equal in the groups. Measurements were compared between dentate and edentulous cases by means of T test. A significant difference was found in the height of the maxillary sinus (T = 8.21 p < 0.001) between dentate and edentulous cases with the maxillary sinus height increasing in edentulous cases. This may be due to the absence of teeth in the dead arch. No significant differences obtained in the width of the maxillary sinus between dentate and edentulous cases.