# A study on 3D imaging of maxillary sinus anatomical variations using CBCT

## TL;DR

This study uses CBCT scans to analyze maxillary sinus variations in 450 patients, highlighting the importance of 3D imaging for accurate surgical planning.

## Contribution

The study provides detailed 3D imaging insights into maxillary sinus anatomical variations using CBCT in a large patient cohort.

## Key findings

- Bilateral asymmetry was observed in 38.4% of cases.
- Septa were present in 62.7% of the maxillary sinuses.
- Root protrusions into the sinus were found in 41.3% of cases.

## Abstract

The maxillary sinus, the largest paranasal sinus, shows considerable anatomical variations that influence oral and maxillofacial
surgical procedures. In this retrospective CBCT study of 450 patients aged 18-75 years, sinus dimensions, septal patterns, floor
morphology and proximity to posterior teeth were evaluated. The mean sinus volume was 14.7 ± 4.2 cm3, with bilateral
asymmetry in 38.4%, septa present in 62.7% and root protrusions into the sinus observed in 41.3% of cases. The sinus floor-to-alveolar
crest distance ranged from 1.2 mm at the first molar to 3.8 mm at the second premolar. These variations emphasize the necessity of CBCT
imaging for precise surgical planning, particularly in posterior maxillary implant placement.