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🧪 In vitro · 2025 · Saudi Arabia (Riyadh)

Boosting osteoblast differentiation: enhancing the effects of low-level blue laser therapy on human embryonic stem cell-derived mesenchymal stem cells to improve viability and calcium deposition

AlGhamdi · Lasers Med Sci · 2025

The protocol this study used

Wavelength
457 nm
Dose
0.5 J/cm²
Sessions
—
Per session
—

What the authors concluded

Blue-laser treatment at 0.5-3.5 J/cm² significantly increased cell proliferation (p < 0.01) and viability (p < 0.05), while migration was enhanced at 0.5-2.5 J/cm² (p < 0.001). CD146 expression rose at 0.5, 1.0, and 2.0 J/cm², with a 1.9-fold increase in ALP activity at 2.0 J/cm². Osteogenic markers and mineralization were likewise upregulated at 2.0 J/cm², indicating enhanced osteoblast differen

Devices that emit this wavelength

Matched on wavelength within 15nm, since LED bins vary by roughly that much and a tighter match would be false precision. Where we have an irradiance figure, the session length is the time needed to reach this study's dose of 0.5 J/cm² at that intensity.

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Hooga Red Light Therapy Facial Wand
415 · 460 · 630 nm
Not published
$70
no irradiance published

Matching a wavelength is not the same as reproducing a trial. Session times assume the device's published irradiance is accurate at the distance it was measured, which on brand-claim figures is often optimistic. Where a device publishes both a peak and an average we use the average, and where it publishes a falloff curve we use the lowest figure, so these times run long rather than short. Clinical protocols also control for spot size, contact and skin type in ways a home device cannot.

Source

PubMed 40694189 →

Dosimetry extracted by Vladimir Heiskanen in Photobiomodulation (PBM) research - a comprehensive database. Citation resolved against PubMed.