Blue laser-induced selective vasorelaxation by the activation of NOSs

Park, Sang Woong; Park, Soonjung; Choi, Hea Kyung; Park, Hyun Ji; Yu, Wonjong; Kim, Hyung–Sik; Jeon, Mina; Chung, Soon−Cheol; Ban, Kiwon; Moon, Sung-Hwan; Bae, Young Min

doi:10.1016/j.mvr.2021.104165

Cited by 3 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Malmqvist et al [ 30 ] found no surface alterations when irradiating titanium discs for 4 min at 2.0 W and at a distance of 1 mm in a non-contact way. The same results were obtained by Deppe et al [ 31 ] by radiating in either continuous-wave (CW) mode (0.8 W, 5 s) or pulsed mode (3 W, 20 s, 10% duty cycle and 1 W, 10 s, 50% duty cycle). In their in vitro study, Deppe and co-workers also evaluated the temperature increase of the implant surface when it was irradiated with a blue laser [ 31 ], In fact, it is important to remember that an increase in bone temperature of even 10° for 60 s may induce severe, permanent structure alterations, greatly compromising the survival of implants in the bone.…”

Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 81%

“…In their in vitro study, Deppe and co-workers also evaluated the temperature increase of the implant surface when it was irradiated with a blue laser [31], In fact, it is important to remember that an increase in bone temperature of even 10 • for 60 s may induce severe, permanent structure alterations, greatly compromising the survival of implants in the bone. In any case, in this study, the authors observed that an exposure of 5 s in CW mode at 0.8 W was safe for implant surfaces.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

SEM Evaluation of Thermal Effects Produced by a 445 nm Laser on Implant Surfaces

et al. 2023

View full text Add to dashboard Cite

The aim of this in vitro study was to evaluate thermal effects on implant surfaces using a 445 nm diode laser (Eltech K-Laser Srl, Treviso, Italy) with different power settings and irradiation modalities. Fifteen new implants (Straumann, Basel, Switzerland) were irradiated to evaluate surface alteration. Each implant was divided into two zones: the anterior and posterior areas. The anterior coronal areas were irradiated with a distance of 1 mm between the optical fiber and the implant; the anterior apical ones were irradiated with the fiber in contact with the implant. Instead, the posterior surfaces of all of the implants were not irradiated and used as control surfaces. The protocol comprised two cycles of laser irradiation, lasting 30 s each, with a one-minute pause between them. Different power settings were tested: a 0.5 W pulsed beam (T-on 25 ms; T-off 25 ms), a 2 W continuous beam and a 3 W continuous beam. Lastly, through a scanning electron microscopy (SEM) analysis, dental implants’ surfaces were evaluated to investigate surface alterations. No surface alterations were detected using a 0.5 W laser beam with a pulsed mode at a distance of 1 mm. Using powers of irradiation of 2 W and 3 W with a continuous mode at 1 mm from the implant caused damage on the titanium surfaces. After the irradiation protocol was changed to using the fiber in contact with the implant, the surface alterations increased highly compared to the non-contact irradiation modality. The SEM results suggest that a power of irradiation of 0.5 W with a pulsed laser light emission mode, using an inactivated optical fiber placed 1 mm away from the implant, could be used in the treatment of peri-implantitis, since no implant surface alterations were detected.

show abstract

Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation