As an example a class 4 laser emitting 880 and 970 nm laser light at 10 w average power with a beam surface area of 10 cm producing a radiant exposure of 1000 mw cm thus exceeding the safe exposure limits known as the maximum permissible exposure limits mpe which range from 200 mw to 500 mw cm depending on wavelength.
Class 3 vs class 4 laser therapy.
There is zero published evidence to show that a class 4 laser penetrates deeper than a high powered 3b laser.
Laser classes lasers are classified for safety purposes based on their potential for causing injury to humans eyes and skin.
The pressure will also lead the laser probe closer to the target.
One of the major differences between laser therapy systems is whether they are a class iii 3 or class iv 4 laser device.
It will be listed either in arabic numerals 1 2 3r 3b 4 or in roman numerals i ii iiia iiib iv.
Others offer pulsing to allow for heat dissipation.
The class iv studies are still few and sometimes surprisingly biased.
The industries best protocol library every laser comes with the laser therapy us protocol library and training tool.
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Class iv laser companies use class 3b evidence to promote their products because they don t have much of their own.
3b laser systems cost less.
Many people that don t get results with a class 3b and below will get results with a class 4.
Thus a class 3b laser can penetrate deeper into tissue than a class iv laser and can therefore saturate the target faster.
Basics of laser classification.
But the standard class 3b laser turned out to be a very weak laser pointer.
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The bottom line is that class 4 system deliver results.
Remarkably these references are generally class 3b studies.
This app follows the best practices for laser therapy and dynamically creates pictorial treatment plans for over 250 different conditions for humans pets and horses.
Assessment of feasibility and efficacy of class iv laser therapy for postoperative pain relief in off pump coronary artery bypass surgery patients.
Most laser products are required by law to have a label listing the class.
The effectiveness of therapeutic class iv 10w laser treatment for epicondylitis.
The heat buildup by class 4 is negative and some manufacturers add cooling to the beam.
Knowing the difference and how each will affect the type of treatment you can provide is important when deciding on a laser therapy system.
3b lasers are safer.
If the class iv laser is in the 940 980nm wavelength range then it.
This power and penetration of the k laser system is not attainable with cold laser class iii devices.