Transmission of 940 nm diode laser to the radicular area during its application as root canal disinfectant

Abstract

To measure the transmitted laser power in the coronal, middle and apical root thirds during vertical and horizontal irradiation of laser. 14 mm length whole roots and longitudinal root sections were irradiated using a 940 nm diode laser with 0.5 W in continuous mode for 5 s. A power detector was placed in front of the root apex for the vertical transmitted power measurement and placed laterally to root surface for the horizontal transmission experiment. The transmitted power from the root apex vertically was 53% of the irradiated power, while for the horizontal transmission experiment for the coronal, middle and apical root thirds were 25.6%, 40.4% and 41.3%, respectively. Irradiation of root canals with 940 nm laser power can be transmitted during vertical irradiation in more than 50% of the samples, whereas less transmission happens with horizontal irradiation at apical and middle root third than coronal.

Evaluation of cutting efficiency and thermal damage during soft tissue surgery with 940 nm‐diode laser: An ex vivo study

“…16 As a matter of fact, the maximum absorption of the visible and near-infrared range diode lasers in oral soft tissues correlates with the absorption range of melanin, with the exception of 445 nm-diode laser, which has its highest absorption in hemoglobin. 17 Recently, diode lasers with a wavelength of 940 nm have been introduced for dental applications such as bacterial reduction in endodontics, 18 therapy of periimplantitis, 19 photobiomodulation in therapy of periodontitis, 20 and surgery of soft tissues. 9 Considering that such high-power level lasers used in dental practice may produce significant photothermal effect, hazardous thermal effects may be induced on soft tissues depending on the wavelength and power of the emitted light, the optical properties of the treated tissue, and in particular, the application mode (i.e., contact or noncontact).…”

In vitro Investigation the Antifungal and 940 nm Diode Laser Effects on Inhibition of Candida Albicans Isolated from Oral Cavity

“…In persons with decreased cellular immunity, C. albicans could become active and cause oral infections (Williams et al,2012). Fungi have been discovered in dental root canals, dentin walls, and even periodontal pockets (Al-Maliky MA et al, 2022).…”