Measurement of maxillary sinus volume using computerized tomographic images

Area of Science:

• Oral and Maxillofacial Surgery
• Dental Implantology
• Anatomical Studies

Background:

• Maxillary sinus floor augmentation is crucial for dental implant success in the posterior maxilla.
• Determining the precise volume of autogenous bone graft required is essential for predictable outcomes.
• Computerized tomographic (CT) imaging offers a non-invasive method for volumetric analysis.

Observation:

• Maxillary sinus volumes were quantified using 3D reconstruction from CT scans of 38 sinuses.
• Simulated sinus lift procedures indicated specific inferior sinus volumes for 15-mm (4.02 ± 1.44 cm³) and 20-mm (6.19 ± 1.77 cm³) lifts.
• Individual variations in sinus volume and graft resorption were considered.

Findings:

• A minimum of 5.46 cm³ of graft bone is recommended for a 15-mm maxillary sinus lift.
• A minimum of 7.96 cm³ of graft bone is recommended for a 20-mm maxillary sinus lift.
• These volumes account for individual anatomical differences and potential graft resorption.

Implications:

• Provides evidence-based guidelines for graft material quantification in sinus augmentation.
• Aids surgeons in planning and executing more predictable sinus lift procedures.
• Contributes to improved success rates for dental implants placed in augmented maxillary sinuses.