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what is low level laser?


what is low level laser?

low level laser

low level laser

What is LLLT (low level laser) ?-Low level laser therapy is a treatment procedure that makes use of certain specific wavelengths of light to interact and communicate with tissues, accelerating the healing process inside human body.
Low Level Laser Therapy

Applied by a special laser beam generator, the part of the body that requires healing is exposed to low intensity laser, consequently producing photon energy. Eventually, this energy gets transformed into bio-mechanical energy which allows the restoration of normal functioning of cells. This therapy has gained momentum due to its striking attributes like alleviation of pain, inflammation, and initiate healing process on the affected cells.

Just like photosynthesis works plants, LLLT (low level laser) also has a photo-chemical effects on the body. This mechanism of action occurs inside Mitochondria. The desired effect is dependent on the application of correct wavelength and density of light for a decent amount of time, somewhere between 30 to 60 seconds. The pulses generated can improve tissue repair and anti-inflammatory effects as well.

In addition, it is used on patients who suffer from a variety of health conditions and ailments to help them do away with pain, swelling, reduce spasms and increase functionality.

LLLT (low level laser) (Low Level Laser Therapy) is the application of red and near infra-red light over injuries or lesions to improve wound and soft tissue healing, reduce inflammation and give relief for both acute and chronic pain. First developed in 1967, it is now commonly referred to as LLLT (low level laser).

LLLT (low level laser) is used to: increase the speed, quality and tensile strength of tissue repair; resolve inflammation and relieve pain (analgesia).

The red and near infrared light (600nm-1000nm) commonly used in LLLT (low level laser) can be produced by laser or high intensity LEDs. The intensity of LLLT (low level laser) lasers and LED’s is not high like a surgical laser. There is no heating effect.

The effects of LLLT (low level laser) are photochemical (like photosynthesis in plants). When the correct intensity and treatment times are used, red and near infrared light reduces oxidative stress and increases ATP. This improves cell metabolism and reduce inflammation. These effects can be enhanced with pulses however when analgesia is required there is a second mechanism which works best when a strong continuous beam is applied.

LLLT (low level laser) devices are typically delivering 10mW – 500mW (0.01 -> 0.01 Watts). The power density typically ranges from 0.005W/Cm² -> 5 W/Cm².

LLLT (low level laser) is popularly used for soft tissue injuries, joint conditions, neuropathic pain, non-healing leg and pressure ulcers.

NEWS The Lancet publishes landmark review of LLLT (low level laser) for neck pain read more and listen to interview here
Introduction to LLLT (low level laser) Video

Introduction to LLLT (low level laser) and dose response by Prof. Michael Hamblin, Wellman Centre for Photomedicine, Harvard Medical School
Source: International Dose Response Society

Download ‘LLLT (low level laser) dose review (PDF)’
This paper from Harvard Medical School reviews the LLLT (low level laser) mechanisms and the biphasic dose response. It summarises the molecular and cellular mechanisms of LLLT (low level laser), gives a scientific explanation for the biphasic dose response (why a low dose has a stimulatory effect and why a high dose inhibits). Low power densities tend to get better healing and anti-inflammatory effects where higher power densities are more likely to inhibit (which may be useful if you just want an analgesic effect). I have to disclose an interest in this paper because I am a co-author. James Carroll CEO THOR Photomedicine.

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low level laser

low level laser

How low level laser work?

How Does low level laser therapy Work?-The effects of laser therapy are photochemical and photomechanical, not thermal – at least, not on a macro-scale.

There are two primary forms of effects generated by laser irradiation of biological tissues: photon-absorption (the basis of photobiological action, and generated by all forms of light), and speckle formation, which is unique to laser therapy.

Photon-absorption effects occur when photons enter the tissue and are absorbed by photoreceptive molecules, called chromophores, in the mitochondria and at the cell membrane. Photonic energy is then converted to chemical energy within the cell, and is utilised in the form of ATP.

A number of the effects of laser irradiation, however, are unique, and are due to the speckle field that is created when coherent laser radiation is reflected, refracted and scattered. The speckle field is not simply a phenomenon created at and limited to the tissue surface, but is generated within a volume of tissue, persisting to the total extent of the depth of penetration of the laser beam.

Laser speckles formed deep in the tissue create temperature and pressure gradients across cell membranes, increasing the rate of diffusion across those membranes. Further, photons within each speckle are highly polarised, leading to an increased probability of photon absorption (one possible reason for why laser therapy has been shown to consistently out-perform other non-coherent light sources, especially for deeper tissue treatments).

Laser therapy causes vasodilation, an increase in the size of small arteries and lymph vessels, this allows inflammation, swelling, and edema to be cleared from an injury site more effectively. The laser also stimulates light sensitive structures in your cells triggering a series of events within the cells leading to enhanced cell function and accelerate the healing process.
TARGET (Treatment Area Recognition and Guidance Enhanced Technology) Technology

The treatment found on the M4 Super Pulsed LaserStim is the first and only FDA-cleared device to use electric stimulation and laser in a single device. It is able to target areas of spasm both superficial and deep by constantly measuring the electroconductivity of the tissue. This helps to assist in identifying the optimal treatment location.

Why low level laser?

The Erchonia laser has been found to offer superior healing and pain relieving effects. The results seem equally untouchable for early stages of acute injuries, and for chronic problems. LLLT is a universal method of treating mucles, ligament, tendon, connective tissue, bone, neurological dysfunction or damage and skin tissue. When the laser is applied with chiropractic care the best results are achieved to organize the nervous system and promote healing. Erchonia LLLT (low level laser) is a major advantage for athletes due to the neurological applications and extremely fast results that can be achieved.

Where and what Clinical Uses Application range of LLLT (low level laser)

Since the first experiments in the 1960s with laser treatment for impaired wound healing, there has been much research-both lab-based and clinically-into the use of lasers for medical treatment. Later Nils Finsen pioneered the use of UV therapy for which he won the Nobel prize in 1904 [2]). The use of lasers and LEDs as light sources was the next step in the technological development of light therapy, which is now applied to many thousands of people worldwide each day.

The Lasers and LEDs are applied directly to the respective areas (e.g., wounds, sites of injuries) or to various points on the body (acupuncture points, muscle-trigger points). Controlled clinical trials have shown efficacy in treating stroke, stimulating wound healing, orthopedic conditions and relief of chronic inflammation. Preclinical studies have shown effectiveness in spinal cord injuries, peripheral nerve regeneration, heart attacks, degenerative brain diseases and traumatic brain injury.

LLLT (low level laser) is now widely used in:

• Sports-medicine and rehabilitation clinics – to reduce swelling and hematoma, relieve pain, improve mobility, and treat acute soft-tissue injuries
• Dentistry – to treat inflamed oral tissues and to heal diverse ulcerations
• Dermatology – to treat edema, non-healing ulcers, burns, and dermatitis
• Rheumatology – to relieve pain and treat chronic inflammations and autoimmune diseases
• Veterinary Medicine – especially in racehorse-training centers
• Other specialists and general practitioners

low level laser

low level laser


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