According to the Arndt-Shultz law, what is the effect of doses higher than 10J/cm in LLLT?

The Arndt-Shultz law describes the relationship between the dose of energy applied and its effects on biological systems, particularly in low-level laser therapy (LLLT). According to this law, there is an optimal range of doses that promote healing, while doses that exceed this optimal range can have inhibitory effects.

When doses exceed 10J/cm, the energy applied begins to overwhelm the biological systems, potentially leading to a detrimental effect rather than a beneficial one. This phenomenon occurs because excessive energy can cause heating and damage to the cells, leading to inflammation or cellular stress that can impede the healing process instead of enhancing it. The law emphasizes that while low doses can stimulate cellular activity and promote healing, high doses can have the opposite effect, acting as a suppressant to healing responses.

Understanding this principle helps practitioners determine the appropriate laser settings to optimize treatment outcomes and avoid using excessive energy that could hinder the healing process.