INTRODUCTION The effectiveness of low power lasers for incisional wound healing, because of conflicting results of previous research studies, is uncertain. Therefore, this study was carried out to evaluate low power laser effects on incisional wound healing. MATERIALS AND METHODS Incisional wound was produced on thirty-six mature male guinea pigs under general and local anesthesia. In half of...

This study was performed to confirm that activated leukocytes are concerned with Vascular Shut Down effect ; VSD in PhotoDynamic Therapy ; PDT. Hydrogen peroxide ;H2O2, which is a kind of active oxygen that came from monocytes, was made visibility under the confocal laser scanning microscope ;CLSM, and tried to quantify the amount of its formation from the fluorescent intensity with image analy...

Objective: To evaluate the effects of low-level helium-neon (HeNe) laser on cutaneous wound healing in rats. Methods: Sixty Wistar rats were divided into control group and experimental group. A sutured longitudinal, dorsal-medial incision was made, with simple separate stitches. The experimental group was irradiated daily in three areas of the wound with HeNe laser (5mW maximum continuous power...

OBJECTIVE To evaluate the effects of low-level helium-neon (HeNe) laser on cutaneous wound healing in rats. METHODS Sixty Wistar rats were divided into control group and experimental group. A sutured longitudinal, dorsal-medial incision was made, with simple separate stitches. The experimental group was irradiated daily in three areas of the wound with HeNe laser (5mW maximum continuous power...

In this lab, we investigated the responsivity, time response, and noise performance of various photodetectors, including thermal detectors, silicon photodiodes, and photomultiplier tubes (PMT). A standard helium-neon gas laser (HeNe), operated in the red (632.8 nm), was used as the light source for the measurements of the silicon photodiodes. A flashlight served as a radiation source to measure...

A two-wavelength plasma density interferometer utilizing a CO(2) laser and an HeNe laser is described. The interferometer is being designed for use on Doublet III, a large noncircular cross-section tokamak. The use of the two wavelengths allows the distinction between fringe shifts due to plasma density and fringe shifts due to mirror vibrations. Plasma density fringe shifts of 1/10 of a fringe...

OBJECTIVES The purpose of this study was to evaluate the antimicrobial effect of toluidine blue O (TBO), in combination with either a helium/neon (HeNe) laser or a light-emitting diode (LED), on the viability and architecture of Streptococcus mutans biofilms. METHODS Biofilms were grown on hydroxyapatite discs in a constant depth film fermentor fed with artificial saliva that was supplemented...