Does titanium surface treatment influence the bone-implant interface? SEM and histomorphometry in a 6-month sheep...

Area of Science:

• Biomaterials Science
• Orthopedic Surgery
• Tissue Engineering

Background:

• Threaded titanium implants are widely used in orthopedic and dental applications.
• Surface characteristics like roughness and chemical composition can influence osseointegration.
• Understanding implant performance is crucial for improving bone healing and implant stability.

Purpose of the Study:

• To compare the in vivo performance of two distinct threaded titanium implants (Euroteknika and Nobel Biocare) in a sheep model.
• To analyze the surface characteristics and bone-implant interface of each implant type.
• To evaluate the osseointegration potential and bony response to different implant designs.

Main Methods:

• A 180-day in vivo study was conducted in sheep using Euroteknika and Nobel Biocare threaded titanium implants.
• Scanning electron microscopy and image analysis were employed to assess implant surface roughness and morphology.
• Histomorphometric analysis of undecalcified bone sections evaluated the bone-implant interface.

Main Results:

• The two implant types exhibited distinct surface characteristics, including differences in chemical composition, thread morphology, and roughness index (0.214 for Euroteknika, 0.139 for Nobel Biocare).
• Both implant types demonstrated excellent osseointegration, with haversian bone in direct contact with the titanium surface.
• No significant difference was observed in the bone-covered interface length between the two implant groups.

Conclusions:

• Despite differences in surface properties, both Euroteknika and Nobel Biocare threaded titanium implants achieved comparable and successful osseointegration in a sheep tibial model.
• The findings suggest that variations in surface characteristics between these specific implants did not lead to significantly different bone healing outcomes over 180 days.
• This study provides valuable comparative data on the in vivo performance of different threaded titanium implant designs.