A pilot study comparing screw-shaped implants. Surface analysis and histologic evaluation of bone healing

Area of Science:

• Biomaterials Science
• Dental Implantology
• Orthopedic Research

Background:

• Dental implant surface characteristics significantly influence osseointegration.
• Comparing implants from different manufacturers is crucial for clinical decision-making.
• Understanding surface topography and composition aids in predicting bone-implant interactions.

Purpose of the Study:

• To compare the surface properties and bone formation adjacent to two screw-shaped dental implants from different manufacturers (SERF and Nobelpharma).
• To evaluate the impact of minor surface design differences on osseointegration and early bone healing.

Main Methods:

• Surface analysis using Scanning Electron Microscopy (SEM), X-ray micro-analysis, and Electron Spectroscopy for Chemical Analysis (ESCA).
• Histomorphometric analysis of bone-to-implant contact in a sheep femur model after 12 weeks.
• Histological preparation with oxytetracycline staining for bone formation assessment.

Main Results:

• SEM revealed differences in thread edge design (flat vs. rounded).
• ESCA indicated a slightly higher carbon peak on SERF implants.
• Average bone-to-implant contact was 68% for SERF and 61% for Nobelpharma implants, with no statistical difference.
• No significant difference in early bone healing between the two implant types was observed.

Conclusions:

• Preliminary findings suggest comparable early bone healing and osseointegration for the investigated screw-shaped titanium implants, despite minor surface variations.
• The study highlights the importance of both surface topography and material composition in implant performance.
• Further research with larger sample sizes is warranted to confirm these preliminary results.