Laser-Induced Temperature Changes on the Outer Surface of Titanium Dental Implants: An In Vitro Study

Area of Science:

• Biomaterials Science
• Dental Implantology
• Laser Physics

Background:

• Titanium dental implants are widely used in restorative dentistry.
• Laser technology offers potential for modifying implant surfaces and properties.
• Understanding thermal effects during laser irradiation is crucial for clinical application.

Purpose of the Study:

• To quantify the surface temperature distribution of titanium dental implants.
• To investigate the impact of CO2 laser power settings, application intervals, and irradiation times on implant surface temperature.

Main Methods:

• Ten titanium implants were irradiated using a CO2 laser (10.6 μm wavelength).
• Four power levels (4-10 watts) and three beam modes (continuous, 5s, 10s pauses) were tested.
• Surface temperature was measured at the shoulder, middle, and apex using thermocouples.

Main Results:

• Continuous laser application (Setting I) resulted in the most rapid and highest surface temperature increase.
• Increased pause intervals (Settings II and III) significantly reduced both the rate and total temperature increase.
• A significant temperature gradient between the implant apex and shoulder was observed with longer pause intervals (Setting III).

Conclusions:

• CO2 laser irradiation of titanium implants generates distinct temperature distribution profiles.
• Laser power and application interval critically influence thermal distribution.
• A temperature gradient exists, with the apex experiencing the greatest temperature change.