Reflections on the Er:YAG Laser Used in “Nonthermal Mode” to Rejuvenate Skin

Treatment of psoriatic skin lesions with a new Er:Yag laser technology: A case series study

“…This is able to cause damage to the cellular membranes, the cytoplasm and/or the nucleus and interfibrillar rupture of fibers through a mechanical action. As a result, microregions with mechanically destroyed cells and intercellular fibers surrounded by intact cells are formed at the level of the dermis (Trelles & Khomchenko, ; Volkova et al, ; Figure ).…”

“…It is performed using an Er: YAG laser (2,940 nm) and a special treatment head SMA. In essence this method takes advantage of the radiation of an erbium laser with a wavelength of 2,940 nm, which is well absorbed by water and is space modulated in such a way that an energy flux is applied to the treated surface with an ordered alternation between the maxima and minima the density of the energy (Alcolea et al, 2017;Hersant, SidAhmed-Mezi, Chossat, & Meningaud, 2017;Trelles & Khomchenko, 2019;Trelles, Khomchenko, Alcolea, & Martinez-Carpio, 2016;Volkova, Glazkova, Khomchenko, & Sadick, 2017;Volkova, Valamina, Shvidun, Rebrieva, & Sadick, 2019). The energy emitted in pulses, when interacting with the tissue modulates spatially which means that the energy affects not only the skin's surface, but also penetrates toward the inside of the dermis.…”

“…The observed histological image is due to the lack of definition of dermic fibers, known as hyalinisation. Interfibrillar spaces increase due to the influence of the mechanical energy of waves, which causes the fibers to repel each other (Trelles & Khomchenko, 2019;Volkova et al, 2019).…”

Laser treatment of acne conglobatа with concomitant oral isotretinoin use

“…The laser treatment plan included (Figure 2): at the first stage, carrying out a course of procedures using a vascular laser Nd:YAP/KTP 1079/540 nm in areas with a tendency to hypertrophic growth on the face and neck; at the second stage, the use of the Er:YAG laser 2940 nm with SMA technology for all types scars. [6][7][8][9] The basic safety principles were applied before treatment, including the mandatory patient examinations every 2 weeks, an initial test for each type of laser exposure in a small area, expansion of the treatment area after confirmation of effectiveness. Four sessions were conducted using the vascular laser with an interval of 2-3 weeks.…”

Erbium Laser for Skin Surgery: A Single-Center Twenty-Five Years’ Experience

“…However, its main field of use is dentistry, where this type of laser is a cornerstone in oral surgery and implantology [3][4][5][6]. The Erbium laser emits at 2940 nm and is characterized by an active medium consisting of a Yttrium-Aluminium-Garnet (YAG) crystal doped with erbium ions [7,8]. The 2940 nm wavelength guarantees a maximum absorption by the aqueous tissue component (this wavelength is the closest to the 3000 nm absorption peak of water), thus allowing a very superficial epidermal ablation, a minimal thermal effect, and a limited area of necrosis.…”