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Classification of maxillary sinus floor contours and mucosal thickening: a CBCT-based analysis
Hilal Peker Öztürk1, Şükran Ayran1, Selma Ece Karabıyıkoğlu2
1Gulhane Faculty of Dentistry, Department of Dentomaxillofacial Radiology, University of Health Sciences, Ankara, Turkey.
BMC Oral Health
|May 23, 2026
Summary
Maxillary sinus floor morphology and mucosal thickening were classified using cone-beam computed tomography (CBCT). Tooth loss significantly impacted sinus floor shape, highlighting its importance for dental implant surgery.
Area of Science:
- Anatomy
- Radiology
- Oral Surgery
Background:
- The maxillary sinus is a critical anatomical structure in the posterior maxilla.
- Understanding its variations is vital for successful surgical interventions.
- Radiological assessment is essential for pre-surgical planning.
Purpose of the Study:
- To classify maxillary sinus floor morphology.
- To determine the prevalence of maxillary sinus mucosal thickening.
- To analyze these factors in a Turkish population.
Main Methods:
- Cone-beam computed tomography (CBCT) scans of 203 patients were analyzed.
- Maxillary sinus floor contours were classified using Niu et al.'s system.
- Mucosal thickening was categorized using Block's classification.
Main Results:
- 1,080 tooth sites in 180 patients were evaluated.
- Tooth loss significantly influenced maxillary sinus morphology, particularly in molar regions.
- No significant association was found between gender or age and mucosal thickening.
Conclusions:
- Accurate classification of maxillary sinus floor morphology is crucial for surgical planning.
- Evaluation of mucosal thickening aids in reducing surgical complications.
- These findings are particularly relevant for dental implant placement.
