Abstract
Problem: The purpose of this study was to evaluate the volume of maxillary sinus according to age and sex, by using a 3-dimensional reconstruction of computed tomography (3DR-CT). Methods: One hundred sixty-six people (243 maxillary sinuses) had taken PNS HRCT between December 2000 and November 2003. The medical records were reviewed for the following exclusion criteria: those who have any evidence of inflammation or hypoplasia in CT finding and those who have any specific history of surgery of paranasal sinus or maxillofacial trauma. Three-dimensional reconstruction images were obtained based on high-resolution CT by surface-rendering technique on a personal computer. Software (Vwork 4.0 from CyberMedTM, Korea) was used for 3-dimensional reconstruction. The maximal horizontal and vertical dimensions and the degree of descent of sinus below the nasal floor were evaluated. Results: The development of maxillary sinus appeared until early in the third decade in both sexes. The mean volumes of maxillary sinus in the adolescent group were 22,572.5 mm3 (male) and 15,756.3 mm3 (female). A significant sex difference was observed in the sinus volume ( P < 0.05). There was considerable variation in the volume of the maxillary sinus between age groups. However, there was no significant correlation between aging process and aeration of maxillay sinus after maximal growth, and between aging process and the descent below the nasal floor. Conclusion: The growth of maxillary sinus continues until early in the third decade. Because any surgical procedures operated on maxillary sinus before that age may affect sinus development, any invasive procedures on maxillary sinus should be done cautiously and inferior meatal antrostomy should also be done after the level of maxillary sinus floor is confirmed to extend below the nasal floor. Significance: This study helps us to determine the normal aeration volume of maxillary sinus according to age and sex. Support: None reported.
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