Low Level Laser belongs to which category of laser instruments?

Low Level Laser Therapy (LLLT), often referred to as Photobiomodulation (PBM), involves the use of low-intensity lasers or light-emitting diodes (LEDs) to promote healing, reduce inflammation, and relieve pain. The term "Photobiomodulation" specifically describes the process where light affects biological systems, primarily through interactions at the cellular level without causing thermal damage to the tissues.

In this therapeutic context, the low power of the laser is intentional, as it allows for stimulation of cellular processes without the heat generation associated with higher energy lasers. This distinction is crucial because higher energy lasers are typically used for cutting or ablating tissues in industrial or surgical applications, which involve heat generation and can cause cellular damage.

Thus, low level lasers are categorized under Photobiomodulation due to their functional impact on biological tissues and their non-thermal, healing properties.