Assessment of Buccal Bone Surrounding Dental Implants Using a High-Frequency Ultrasound Scanner

Area of Science:

• Biomedical Engineering
• Dental Implantology
• Medical Imaging

Background:

• Accurate assessment of buccal bone dimensions is crucial for dental implant success.
• Traditional imaging methods like CBCT involve radiation exposure.
• Non-invasive imaging modalities are sought for routine assessment.

Purpose of the Study:

• To evaluate the efficacy of high-frequency ultrasound (US) in measuring buccal bone dimensions around dental implants.
• To compare US measurements with cone-beam computed tomography (CBCT) and optical microscopy.
• To determine the accuracy and discrepancy of US for bone thickness and bone level assessment.

Main Methods:

• Dental implants (n=10) were placed in the maxilla of dry skulls.
• Scans were performed using a high-frequency ultrasound (28 MHz) and CBCT (0.18 mm voxel size).
• Measurements of bone level and buccal bone thickness were validated against an optical microscope using a stone block control.

Main Results:

• No statistically significant difference was found between US and CBCT measurements.
• Ultrasound showed a mean discrepancy of 0.38 mm for bone thickness and 0.68 mm for bone level.
• CBCT exhibited a mean discrepancy of 0.51 mm for bone thickness and 0.09 mm for bone level.

Conclusions:

• High-frequency ultrasound is a capable tool for measuring buccal bone dimensions surrounding dental implants.
• US offers a promising, potentially radiation-free alternative to CBCT for peri-implant bone assessment.
• Further research can explore US for real-time intraoperative guidance in implant dentistry.