Both laser and LED therapies rely on being able to deliver an adequate amount of energy to the target tissue in order to precipitate a photochemical process known as photo biomodulation. PBM is a nonthermal process involving endogenous chromophores eliciting photophysical and photochemical events at various biological scales. Some processes that are impacted include, but are not limited to, the alleviation of pain or inflammation, immunomodulation, and promotion of wound healing and tissue regeneration.
Both sources of light share the same mechanism of action and are both commonly generated using diode technology. When used and studied in therapeutic applications, both lasers and LEDs are often built to emit similar wavelengths, either in the red or near-infrared spectrum, and have been shown to have inflammatory reduction properties. Significant differences between the two do exist, however; including the power generated, the specificity of wavelength, and the physical characteristics of the beam generated from the diode.
Laser light is unique, in that it is monochromatic, coherent, and collimated. These traits make it well-suited to many medical applications. The monochromatic, or single wavelength, beam is ideal for stimulating chromophores in biological tissue that only respond to very specific wavelengths. Coherent photons are organized where non-coherent photons are not. This property is important to minimize photon scatter as light interacts with tissue. Lastly, since injured tissue is normally deep in the body, laser’s columnated beam helps focus energy in a narrow, direct path which is ideal for treating tissues at depth.
LEDs usually emit light in a small band of wavelengths (~20 nm wide) but cannot emit a single specified wavelength (~1 nm wide). This bandwidth impacts their ability to dial in the wavelength to optimally target desired tissues. Additionally, LEDs produce neither a collimated nor coherent beam, which is less ideal when treating deeper tissues. Lastly, LED’s operate at significantly lower power (wattage) than most lasers, which impacts their ability to reach deeper tissues in smaller windows of time.
When trying to target deeper tissues, wavelength is a critical variable that can play a significant role in the light’s ability to penetrate tissue. But it is not the only determining factor in therapeutic effectiveness. Power is a second variable that also plays a large role in determining both proper use and consistency of outcomes for light-based therapies. Lasers are generally capable of producing much higher powers than LEDs, which significantly impacts their ability to reach deeper tissues, especially for hair regeneration purposes. This is due to the concept of therapeutic depth, which involves getting an adequate amount of photonic energy to injured tissue to have a photo biomodulation effect. Since a significant amount of light is lost as it passes through tissue, having more initial power at the surface improves the modality’s ability to provide adequate amounts of energy at depth.
LEDs often get a lot of initial attention because they are much cheaper than laser technology. Lasers used to treat deep tissue (that offer a wider range of power), however, give providers the most flexibility in terms of treatment capabilities as they can be used to treat both superficial and deep conditions, while reactivating cellular response to grow hair.
Hair Restoration experts have found that the use of low level laser energy is superior to the treatment of hair loss due to the depth of the light and the ability to heal and replenish at the cellular level. To learn more about low level laser light therapy, click here.
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PAI Medical Group has offered the “Gold Standard” in permanent and natural hair restoration and hair transplants for over 30 years. Only at PAI Medical Group of Indiana will you find our trademarked procedure Multi-Unit Hair Grafting™ and the newest technology in FUE (Follicular Unit Extraction), The ARTAS® Robotic System, a breakthrough in Robotic Hair Transplantation, Enhanced Plasma Therapy and Laser Hair Therapy. We offer FREE private evaluations, as well as online and virtual consultations. We can review the costs, low monthly payments and financing. Many of our highly trained and educated hair restoration professionals have been through hair restoration themselves. They will help determine the best treatment plan for your type of hair loss and answer all of your questions. Call today at 1-888-724-5129 or click here to schedule a FREE PRIVATE EVALUATION or VIRTUAL CONSULTATION. Our office is located at 3500 DePauw Blvd, Suite 3090, in Indianapolis, Indiana. Permanent Natural Results are a phone call or click away.