objectives: the purpose of this experimental study was to evaluate the efficacy of low level laser therapy (lllt) for pain reduction after midpalatal expansion in rats.   materials and methods: sixty male sprague six-week old rats weighing 180±10g were divided into seven groups (two experimental groups of 24 rats and one control group of 12 rats). the experimental groups were subjected to expan...

Introduction RE<C was a Google initiative to drive innovation in renewable energy, with the goal of making renewable energy cheap enough to compete head-to-head with coal-fired power plants. Hence the name RE<C “renewable energy cheaper than coal.” As part of this initiative, Google formed an engineering team to develop promising technologies in the field of solar energy power generation. After...

In the laser cutting process some well-known parameters, e.g. laser power and cutting speed, play major roles in the performance of the process. Each parameter or a combination of parameters can affect the material removal volume and cutting volume efficiency. The purpose of this research is to study the effect of power and maximum cutting speed on the material removal rate (MRR) and cutting vo...

Background and Aim: Diode laser is a great choice for soft tissue surgery. The diode laser is partially absorbed by hard dental tissues, making it safe for soft tissue surgery. This study aimed to compare the tissue thermal changes induced by three types of diode lasers at 810, 940, and 980nm wavelengths. Materials and Methods: In this in-vitro experimental study, using a diode laser device (c...

introduction: thermal changes in laser assisted root canal therapy with the use of diode laser can predispose tooth structure to the fracture. this study evaluated the changes in flexural strength of dentin blocks after diode laser irradiations (810 nm). methods: a total of 60 dentinal blocks were prepared from freshly extracted teeth in three different thicknesses (300, 500 and 1000μm) and 20 ...

case presentation the patient was a 45-year-old male with t8 complete paraplegia; he had developed severe pressure ulcer. the authors used lllt as a complementary treatment. they used 980 nm, continuous 6 j/cm2 for margins and 655 nm, continuous 1.8 j/cm2 for bed of the ulcer, along with intravascular laser therapy. after 24 sessions of lllt and z-plasty surgery, the ulcer healed completely. co...