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🧑 Human 🎲 Randomized trial, sham-controlled 👥 60 participants ⌛ 6 days (?) · 2017 · Iran (Zahedan)

Comparing the effect of diode laser against acyclovir cream for the treatment of herpes labialis

Honarmand · J Clin Exp Dent · 2017

The protocol this study used

Wavelength
870 nm
Dose
4.5 J/cm²
Sessions
6
Per session
60 sec

What the authors concluded

The mean length of recovery time (day) in the laser, off laser, and acyclovir groups was 2.20±0.41, 4.30±1.03, and 3.4±1.142, respectively. " "The mean duration of pain (day) was 1.35±0.74, 2.65±1.27, and 2.30±0.92 for laser, off laser, and acyclovir groups, respectively (P<0.0001).

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 4.5 J/cm² at that intensity.

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LightStim for Wrinkles
605 · 630 · 660 · 855 nm
Not published
$249
no irradiance published
Qure Q-Rejuvalight Pro
415 · 605 · 630 · 660 · 880 nm
Not published
$399
no irradiance published
Infraredi Body Wrap Plus
660 · 880 nm
Not published
$199
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 28638546 →

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