A removal torque of the laser-treated titanium implants in rabbit tibia

Area of Science:

• Biomaterials Science
• Orthopedic Surgery
• Materials Engineering

Background:

• Surface texture significantly influences dental implant osseointegration and stability.
• Laser treatment offers a novel method for modifying titanium implant surfaces.
• Understanding the biomechanical effects of surface treatments is crucial for implant success.

Purpose of the Study:

• To compare the removal torque of laser-treated and machined titanium implants in rabbit tibia after 8 weeks.
• To evaluate the effect of surface topography on implant stability and osseointegration.

Main Methods:

• Fourteen commercially pure titanium implants (5mm length, 3.75mm diameter) were used: seven machined (control) and seven laser-treated.
• Implants were surgically placed in rabbit tibiae according to the Branemark protocol.
• Removal torque was measured using a digital torque gauge 8 weeks post-surgery.

Main Results:

• Scanning electron microscopy revealed a regular honeycomb pattern on laser-treated surfaces versus grooved surfaces on machined implants.
• Laser-treated implants exhibited an average removal torque of 62.57 ± 10.44 N cm.
• Machined implants showed an average removal torque of 23.58 ± 3.71 N cm, a statistically significant difference (p=0.00055).

Conclusions:

• Laser-treated titanium surfaces demonstrate superior osseointegration compared to machined surfaces.
• Higher removal torque values for laser-treated implants indicate enhanced mechanical stability.
• Surface modification via laser treatment is a promising strategy for improving dental implant performance.