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Computed tomographic indices for maxillary sinus size in comparison with the sinus volume
1Department of Radiology, Nagasaki University School of Dentistry, Japan.
Dento Maxillo Facial Radiology
|January 1, 1996
Summary
Maxillary sinus size, measured by width on CT scans, changes with age, peaking around 20 years. Sinus floor height is linked to volume but not directly to teeth presence in adults.
Area of Science:
- Anatomy
- Radiology
- Gerontology
Background:
- Maxillary sinus dimensions are crucial for anatomical and clinical assessments.
- Understanding age-related changes in sinus size is important for interpreting imaging findings.
Purpose of the Study:
- To establish normal maxillary sinus size ranges using computed tomography (CT).
- To define convenient indices for assessing sinus size.
- To investigate how sinus size and floor height change with age and dentition status.
Main Methods:
- Measured transverse and anteroposterior dimensions of maxillary sinuses in 107 subjects via axial CT.
- Analyzed the relationship between sinus dimensions and volume.
- Measured sinus floor height relative to the anterior nasal spine.
Main Results:
- Mean adult maxillary sinus widths were 2.70 cm (transverse) and 3.56 cm (anteroposterior).
- Sinus size increased until age 20, then decreased.
- Sinus floor height correlated negatively with sinus volume and changed with age, but was not significantly influenced by dentition in adults.
Conclusions:
- Transverse and anteroposterior sinus widths on CT are practical indices for size assessment.
- Maxillary sinus floor height varies with sinus volume and age, independent of dentition status in adults.