Mandibular Bone Structure Analysis Using Cone Beam Computed Tomography vs Primary Implant Stability: An Ex Vivo...

Area of Science:

• Dental Implantology
• Oral and Maxillofacial Radiology
• Biomaterials Science

Background:

• Primary dental implant stability is crucial for successful osseointegration.
• Pre-surgical assessment of mandibular bone quality is essential for predictable implant placement.
• Cone beam computed tomography (CBCT) offers detailed 3D imaging of bone structure.

Purpose of the Study:

• To investigate the correlation between mandibular bone structure parameters derived from CBCT images and primary implant stability.
• To determine which specific bone parameters and regions are most predictive of implant stability.

Main Methods:

• Twenty-one hemimandibles underwent CBCT scanning.
• Dental implants were placed, and insertion torque and implant stability quotient (ISQ) were measured.
• CBCT scans were analyzed for bone surface, volume, fractal dimension, connectivity, trabecular thickness/spacing, skeleton analysis, and cortical thickness.

Main Results:

• Overall correlations between bone parameters and ISQ were low to medium (|R|=0.002-0.723).
• Skeleton analysis and trabecular thickness showed the highest correlation with ISQ in the coronal region.
• Trabecular thickness and fractal dimension demonstrated the most significant correlations with primary implant stability.

Conclusions:

• Mandibular bone structure parameters from CBCT can predict primary implant stability.
• Specific regional analysis (e.g., coronal, apical) and parameters (e.g., trabecular thickness, fractal dimension) provide complementary information on local bone quality.
• These findings aid in optimizing pre-surgical planning for dental implants.