IADR Abstract Archives
Laser Energy Transfer During 940nm-Diode Laser Irradiation in Periodontal Tissues
Objectives: Diode lasers have various applications in non-surgical periodontal therapy in conjunction with scaling and root planing. The purpose of this study was to demonstrate temperature changes in periodontal tissues during diode laser irradiation in vitro
Methods: A fresh slaughtered bovine jaw was prepared to maintain the periodontal tissues. The posterior teeth were irradiated with a 940 nm diode laser (Epic10, BIOLASE, Inc., USA) following the manufacturer guidelines (pulsed mode: 0.8 W, 300 mm, non-initiated tip) for a total duration of 30 seconds in the mesial and distal direction on the buccal aspect of the teeth (n = 15). Temperature changes in delta T (in Celsius) were calculated using a thermographic camera placed perpendicular to the irradiation beam. The maximum temperature change and thermal heat transfer within the entire irradiation period (in lateral and vertical directions) were measured. Descriptive statistical analysis was performed to present mean values and standard deviations.
Results: The maximum delta T values were 8.40±3.79 °C. The lateral heat transfer and the heat penetration in the vertical direction were: 6.04±1.06 mm, and 4.70±1.03 mm, respectively.
Conclusions: Within the limitations of this study, temperature increases and heat distribution due to 940 nm diode laser irradiation in periodontal tissues can be within the safety zone, but laser-tissue interactions and irradiation periods must be followed to control potential complications.
Methods: A fresh slaughtered bovine jaw was prepared to maintain the periodontal tissues. The posterior teeth were irradiated with a 940 nm diode laser (Epic10, BIOLASE, Inc., USA) following the manufacturer guidelines (pulsed mode: 0.8 W, 300 mm, non-initiated tip) for a total duration of 30 seconds in the mesial and distal direction on the buccal aspect of the teeth (n = 15). Temperature changes in delta T (in Celsius) were calculated using a thermographic camera placed perpendicular to the irradiation beam. The maximum temperature change and thermal heat transfer within the entire irradiation period (in lateral and vertical directions) were measured. Descriptive statistical analysis was performed to present mean values and standard deviations.
Results: The maximum delta T values were 8.40±3.79 °C. The lateral heat transfer and the heat penetration in the vertical direction were: 6.04±1.06 mm, and 4.70±1.03 mm, respectively.
Conclusions: Within the limitations of this study, temperature increases and heat distribution due to 940 nm diode laser irradiation in periodontal tissues can be within the safety zone, but laser-tissue interactions and irradiation periods must be followed to control potential complications.