What is Low Level Laser Therapy (LLLT)?
Low Level Laser Therapy (LLLT) is the use of therapeutic (or cold) laser light to provide relief from pain, eliminate inflammation (swelling) or to repair damaged tissues. LLLT is entirely non-invasive and has a wide range of applications, from neural muscular skeletal conditions to wound healing to acupuncture treatments. Rather than destroying tissue, as with surgical (or hot) lasers, LLLT uses low intensity laser light energy to stimulate cells through a number of known cellular pathways in order to encourage tissue healing.
How Low Level Laser Therapy (LLLT) Works
Laser light is delivered in the therapeutic window by monochromatic laser light in wavelengths ranging from 600 to 950 nm. Light particles also known as photons penetrate up to 10 cm into tissue. Photons are absorbed by electrons in photosensitive compounds, known as chromophores and cytochromes residing in the mitochondria increasing the rate of Adenosine Tri-Phosphate (ATP) production. ATP is the basic food source of cells derived from the phosphorylation of glucose in the mitochondria. ATP fuels the cells and actuates the healing process - more ATP equals faster healing.
Why and how is cold laser therapy effective?
Much of the safety and effectiveness of cold laser therapy lies in its ability to trigger the body to heal itself. Penetrating into targeted tissue, laser light stimulates mitochondria in target cells to produce additional ATP, which fuels cell repair and regeneration. The laser simply jumpstarts the healing process and since the laser used operates within a specific wavelength range that is non thermal (the "therapeutic window"), there is no risk of tissue damage or other complications. A wide variety of studies on the safety and effectiveness of cold laser therapy have been conducted by medical professionals from across the globe. Theralase also regularly conducts research and clinical trials to support the use of and discover new applications for laser technology. Theralase utilizes dual wavelength super pulsing technology (630 nm visible red laser diodes and 905 nm super-pulsed near infrared laser diodes) to be the only laser known to activate all three known cellular pathways simultaneously.
Adenosine Triphosphate (ATP) Pathway - Acceleratees Healing
Activated By 630-670 nm, Visible Red Light
Cells that lack energy are unable to participate in the healing process. Light energy is delivered to injured cells which in turn absorbs the light and converts it into food energy and uses it to replenish themselves. Once cells are fully recharged they are able to replicate and divide, and build upon one another to heal the injured area. Theralase stimulates the mitochondria of the cell to produce more ATP (energy) thus repairing damaged tissue through the phosphorylation of glucose to ATP via the Kreb's Cycle and Electron Transport Chain. Photons with wavelengths between 630nm - 670nm increase the speed at which the mitchondria can absorb glucose and convert it into ATP. Theralase uses 660 nm visible red laser light, which is at the peak excitation of cytochrome C oxidase (a critical cytochome in the Electron Transport Chain used in the phosphorylation of glucose into ATP)
Theralase stimulates the mitochondria of the cell to produce more Adenosine Tri Phosphate (ATP or basic cell energy) to accelerate tissue repair. (Proceedings of the National Academy of Science 2003)
Nitric Oxide (NO) Pathway -Decreases Inflammation
Activated By 905 nm, Near Infrared Red Light
When tissue injury occurs, the inflammatory process is initiated to immobilize the area to prevent further damage, providing us with an indication that the body is hurt. This process is usually associated with pain caused by inflammation pressuring nerve endings. In order to reabsorb this interstitial fluid and decrease inflammation in the region, the body produces nitric oxide (NO), which has been proven to relax the lymphatic system causing it to become more porous allowing the reabsorption process to occur. This process not only reduces inflammation but causes temporary vasodilation (increased diameter of capillaries) bringing much needed oxygen, fuel molecules and other metabolites to the injured tissue aiding in their natural healing.
Independent research proves that the proprietary Theralase 905nm super-pulsed laser Technology increases the production of nitric oxide (NO) by over 700%, increasing vasodilation and decreasing inflammation versus other competitive wavelengths. (Lasers in Surgery and Medicine, 2009).
Lipid Absorption Pathway - Removes Pain
Peak Activation By 905 nm, Near Infrared Red Light
Pain results when a stimulus causes action potentials to rapidly propogate along a nerve cell. These actions potentials are primarily due to an expulsion of positively charged sodium ions (Na+) and an influx of potassium (K+) ions into the nerve cell altering the electrical potential across the membrane. The peak absoption of lipids is in the 905 nm to 910 nm range. Laser light is thus directly absorbed by receptors within the bi-lipid cellular membrane of nerve cells. Once absorbed, the laser light will increase the porosity of the cellular membrane allowing for a reabsorption of sodium ions and expulsion of potassium ions across the cellular membrane rebalancing the sodium-potassium pump and removing the pain signal at source.
Photons with wavelengths of 905 nm effectively removes the pain signal from source by rebalancing the sodium potassium pathway. Theralase laser technology effectively removes the pain signal at source by rebalancing the sodium potassium pathway. (Harvard Medical School 2010)
Why use LLLT?
Many LLLT systems are portable, and treatments can be done virtually anywhere there is a trained technician. LLLT systems are comparatively inexpensive and provide solutions to a wide range of clinical conditions with a single device. LLLT has been proven to work more quickly and often at an earlier stage than conventional surgery or therapy; thus, reducing treatment and recovery times. Put simply, LLLT offers cost savings for institutions and better health care for patients at reduced costs.
Is LLLT safe?
LLLT is painless and is well tolerated by patients of all ages and conditions. During more than 35 years of clinical use, it has never resulted in a serious side effect. Therapeutic laser systems are athermic (no heat) and therefore incapable of causing tissue damage. As well, cells have a natural ability to resist over-stimulation, meaning it is not possible to harm tissue by overdosing, as long a you use a therapeutic laser that is used in the therapeutic window and remains below the Maximum permissible Exposure (MPE) of tissue.
Information Taken From www.theralase.com