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Photobiomodulation LED Devices for Home Use: Design, Function and Potential: A Pilot Study.

Mark Cronshaw1, Steven Parker1, Omar Hamadah2

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Commercial light-emitting diode (LED) photobiomodulation therapy (PBMT) devices for home use show variable performance. Dosimetry instructions often overlook critical optical parameters, potentially impacting treatment effectiveness.

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Area of Science:

  • Photobiomodulation Therapy (PBMT)
  • Medical Device Technology
  • Consumer Health Products

Background:

  • Numerous light-emitting diode (LED) devices for home use lack formal performance appraisal.
  • A gap exists between evidence-based photobiomodulation therapy (PBMT) and consumer products.
  • Evaluation of hand-held LED PBMT devices for home use is needed.

Purpose of the Study:

  • To evaluate the dosimetry and performance characteristics of commercial, hand-held LED PBMT devices for home use.
  • To bridge the gap between the scientific PBMT community and consumer-available devices.
  • To assess the consistency of manufacturer instructions with measured optical parameters.

Main Methods:

  • Selected five intra-oral and hand-held LED PBMT devices for analysis.
  • Measured optical parameters: beam divergence, surface area, output power.
  • Assessed temperature changes in porcine tissue and correlated manufacturer instructions with optical data.

Main Results:

  • Observed heterogeneous results in wavelengths, power output, and irradiance.
  • Found variable power output stability and a wide beam divergence angle (74°).
  • Manufacturer dosimetry instructions were inconsistent with accurate dose delivery due to unaddressed optical attenuation.

Conclusions:

  • Manufacturer dosimetry recommendations inadequately account for beam divergence and optical attenuation.
  • Instructions for optimizing clinical outcomes were not evidence-based.
  • Home PBMT holds potential, pending validation through clinical trials.