CBCT device dependency on the transfer accuracy from computer-aided implantology procedures.

Area of Science:

• Dental Implantology
• Medical Imaging
• Computer-Aided Surgery

Background:

• Computer-aided implantology (CAI) systems enhance precision in dental implant placement.
• Cone-beam computed tomography (CBCT) is crucial for planning and guiding implant surgery.
• The influence of varying CBCT devices on CAI system accuracy remains underexplored.

Purpose of the Study:

• To investigate how different CBCT devices affect the transfer accuracy of an open-source CAI system.
• To quantify deviations in implant placement based on the CBCT device used.

Main Methods:

• 108 implants were planned and placed in 18 models using an open-source CAI system with three distinct CBCT devices.
• Post-operative CBCT and fiducial marker matching were performed.
• Linear (horizontal, vertical, 3D) and angular deviations between planned and actual implant positions were calculated and analyzed for statistical significance.

Main Results:

• Mean 3D deviations ranged from approximately 400 μm to 540 μm, varying with the CBCT device.
• Mean vertical deviations ranged from approximately 350 μm to 370 μm.
• Axes deviations varied by around 0.81°, with significant differences observed between CBCT devices for most parameters.

Conclusions:

• CBCT device selection demonstrably influences the transfer accuracy of CAI systems.
• Deviations can reach up to 0.6° for axes and approximately 0.5 mm for linear measurements.
• This study provides the first in vitro evidence of CBCT device dependency in CAI transfer accuracy.