The radicular dentine temperature during laser irradiation: an experimental study

Area of Science:

• Biomedical Engineering
• Periodontology
• Laser Dentistry

Background:

• Periodontal diseases cause significant damage to root surfaces.
• Effective detoxification and sterilization of radicular surfaces are critical for periodontal treatment.
• Current methods may have limitations in achieving both surface decontamination and preservation of vital tissues.

Purpose of the Study:

• To investigate the efficacy of CO2 laser root planing for detoxifying and sterilizing periodontally affected root surfaces.
• To evaluate the thermal effects of CO2 laser application on radicular surfaces in vitro.
• To determine optimal energy levels and application times for safe and effective treatment.

Main Methods:

• In vitro experiments utilizing CO2 laser in continuous emission mode.
• Root planing procedures were simulated with varying energy levels (2-4.5 J).
• Thermal elevations on the surface and at depths of 0.5-1 mm were measured.

Main Results:

• Thermal elevation on radicular surfaces is directly proportional to dispersed laser energy.
• Moderate thermal elevation in the depth (0.5-1 mm) was observed due to water absorption of radiation.
• Energies of 2-4.5 J delivered in under 0.6 seconds achieved surface detoxification and depth thermal elevation compatible with vital tissues.

Conclusions:

• CO2 laser root planing offers a promising method for detoxifying and sterilizing root surfaces affected by periodontal disease.
• The study identified specific energy parameters (2-4.5 J, <0.6s) for effective treatment while maintaining tissue viability.
• Further in vivo studies are warranted to confirm these findings in a clinical setting.