Although all lasers biologically stimulate cell metabolism via a similar mechanism, that is where the similarities end.The bottom line when it comes to laser therapy it’s all about physics. In order to get penetration you need power. Every doctor knows in order to get deeper penetration with x-rays you need to increase the power output and time of exposure. Laser energy is just another form of energy on the electromagnetic spectrum just like x-rays and the key to greater laser energy delivery and penetration is the same principle and is based on the power output of the laser and the time of laser exposure. Without sufficient power you will not penetrate and deliver the necessary therapeutic dosage.
As a company who received FDA clearance for the FIRST Class IVTherapy Laser in 2003, we have found over the years as we increased power output and energy delivery we saw better and faster outcomes. Energy delivery is a function of power output and it doesn’t matter the brand of the laser as much as the power output and whether or not the laser is operating on a continuous basis or if it is pulsing or operating under a 50% duty cycle, which means the laser is only firing 50% of the time. When you treat a patient you are dosing them with therapeutic energy and the dose is directly related to the power output of the laser.
Another important factor to look at is whether the laser operates under a single or dual wavelength mode. Laser penetration is based on an absorption curve for each wavelength, and the ability of each wavelength to penetrate is not additive. Dual wavelength lasers such as K-Laser or Litecure can only penetrate as deep the individual wavelength that penetrates the most. So what this means is for a 10-12 or 15 watt dual wavelength laser you need to cut the penetration ability in half. We have long known this and also proved that our single wavelength laser can not only accelerate wound healing superficially, it can also penetrate to accomplish healing in deeper seated pathologies. That is why we operate under a single wavelength of which we have over 13 years of clinical experience in both human and veterinary medicine.
Ultimately the more powerful lasers not only dose patients faster they penetrate deeper and ultimately lead to better and faster outcomes. In summary as you search for a Class IV Therapy Laser our recommendation is to seek out a single wavelength laser, which puts out the most energy over a given time period, as well as the laser that offers continuous output operation, and at the given price point you are willing to spend.
Dr. Bruce R. Coren
Skype address: bruce.coren