Fundamental Studies on Tissue Reaction after Low Power Laser Irradiation

Effect of low-power laser irradiation on bony implant sites.

This study was designed to examine the effects of low-energy laser irradiation on osteocytes and bone resorption at bony implant sites. Five male baboons with a mean age of 6.5 years were used in the study. Four holes for accommodating implants were drilled in each iliac crest. Sites on the left side were irradiated with a 100 mW low-energy laser (690 nm) for 1 min (6 Joule) immediately after d...

The investigation of physical and chemical properties of collagenous tissue before and after ArF laser irradiation

Effectiveness of transmeatal low power laser irradiation for chronic tinnitus.

OBJECTIVE To evaluate effectiveness of 5 mW laser irradiation in the treatment of chronic tinnitus. STUDY DESIGN Prospective, randomised, double-blind study. METHODS This investigation included 66 ears in 45 patients with chronic unilateral or bilateral tinnitus. A 5 mW laser with a wavelength of 650 nm, or placebo laser, was applied transmeatally for 15 minutes, once daily for a week. A qu...

Pulse irradiation of low-power laser stimulates bone nodule formation.

Although low-power laser irradiation provides many anabolic effects such as acceleration of bone formation, the effects of different pulse frequencies used during laser irradiation on bone formation have not been elucidated. Osteoblastic cells isolated from fetal rat calvariae were irradiated once with a low-power Ga-Al-As laser (830 nm, 500 mW) in two different irradiation modes; continuous ir...

Effects of low-power Gallium Aluminum Arsenide Laser irradiation on the mast cells of skin wounds in rats

Background and aim: Low-power lasers relief pain in some musculoskeletal disorders and accelerate wound healing process. However, there are few reports on effects of low-power lasers on mast cells. In this study the effects of low-power gallium aluminium arsenide laser (Ga.Al.As.laser) radiation on number and degranulation of mast cells of open skin wound bed of rats were studied using qu...