Titanium-Tissue Interface Reaction and Its Control With Surface Treatment

Area of Science:

• Biomaterials Science
• Orthopedic Engineering
• Dental Materials

Background:

• Titanium (Ti) and its alloys are extensively used in medical and dental implants, including artificial joints and dental implants.
• Their widespread use stems from excellent corrosion resistance and superior hard-tissue compatibility, specifically bone formation and bonding.
• Osseointegration, the direct structural and functional connection between living bone and the implant surface, is a critical requirement for implant success.

Purpose of the Study:

• To review the properties and biocompatibility of titanium and its alloys for implant applications.
• To highlight the significance of surface treatments in enhancing osseointegration and hard-tissue compatibility.
• To explore advancements in surface modification techniques for improved implant performance and tissue engineering applications.

Main Methods:

• Review of existing literature on titanium's properties and biocompatibility.
• Evaluation of surface modification techniques, including roughening, porosity, and coatings (HA, TiO2).
• Analysis of immobilization techniques for biofunctional molecules and their impact on bone formation and adhesion prevention.

Main Results:

• Roughened and porous titanium surfaces effectively accelerate osseointegration.
• HA and TiO2 coatings, along with surface alkalinization, significantly improve hard-tissue compatibility.
• Immobilization of biofunctional molecules on titanium surfaces facilitates bone formation and prevents unwanted adhesion, enabling tissue engineering applications.

Conclusions:

• Understanding the biocompatibility mechanisms of titanium is key to developing optimal implant surfaces.
• Surface treatments are crucial for maximizing the potential of titanium in medical and dental implantology.
• Titanium's versatility, enhanced by surface modifications, positions it as a valuable scaffold material for tissue engineering.