Heat Generation at the Implant-Bone Interface by Insertion of Ceramic and Titanium Implants

Area of Science:

• Biomaterials science
• Orthopedic surgery
• Dental implantology

Background:

• Implant insertion into bone generates heat, potentially affecting osseointegration.
• Material and surface properties influence thermal dissipation during implant placement.

Purpose of the Study:

• To quantify heat dissipation differences between ceramic and titanium implants during insertion into animal bone.
• To investigate the impact of implant surface characteristics on heat generation.

Main Methods:

• Titanium and zirconium implants with identical macrodesign were inserted into bovine ribs at 37°C.
• Infrared thermography measured surface temperature changes on bone windows.
• Six experimental groups evaluated machined, sandblasted, and acid-etched surfaces for both materials.

Main Results:

• Ceramic implants exhibited significantly higher average temperature increases compared to titanium implants (p = 7.163 × 10^-9).
• Surface texture affected ceramic implant temperatures, with acid-etched surfaces showing lower increases than machined or sandblasted.
• Titanium implants demonstrated similar temperature changes across all surface types.

Conclusions:

• Significant temperature elevations occur with ceramic implants during insertion compared to titanium.
• Surface modifications influence heat dissipation in ceramic implants.
• Slower implant insertion velocities are recommended to minimize thermal effects in bone.