Combining confluent and fractionally ablative modalities of a novel 2790nm YSGG laser for facial resurfacing

Abstract

A combined confluent and fractional-ablative 2,790 nm Er:YSGG laser treatment improves photodamaged skin for at least 6 months. The treatment was well-tolerated and PIH was not found in our study.

Minimally ablative resurfacing with the confluent 2,790 nm erbium:YSGG Laser: A pilot study on safety and efficacy

“…This wavelength has a water absorption coefficient of 5,000/cm 2 which is about half way between Er:YAG (12,500/cm 2 ) and CO 2 (1,000/cm 2 ) 10. The Er:YSGG laser enables a balance of depth and thermal impact not achievable with either of the other ablative wavelengths 10–15. Er:YSGG laser treatments of the entire epidermis provide thermal stimulation and hemostasis not possible with Er:YAG lasers without the excess thermal damage, oozing, and downtime associated with CO 2 lasers1, 2, 5–7.…”

Neue Entwicklungen in der Lasertherapie

“…Eine Kombination aus einer kontinuierlich ablativen und fraktional ablativen Lasertherapie durch einen Erb:YSGG (Yttrium-Scandium-Galium-Garnet)-Laser wird in einer jüngst erschienenen Arbeit vorgestellt [47]. Mit einer Wellenlänge von 2790 nm wurde der Laser zur kombiniert kontinuierlichen und fraktionalen ablativen Therapie der Hautalterung in einer prospektiven Studie bei 10 Patienten eingesetzt.…”

“…Als Nebenwirkung fiel ein mildes Erythem auf, das 6 Wochen nach Therapie bei allen Patienten abgeheilt war. Persistierende Nebenwirkungen wurden nicht berichtet [47].…”

Commentary on Treatment of Acne Scars in Asian Patients using a 2,790-nm Fractional Yttrium Scandium Gallium Garnet Laser

“…The YSGG 2,790‐nm fractional laser induces a reproducible layer of 40 μm of coagulation at both sides of the ablative microcolumn. The ablative microcolumn is consistently 300 μm in diameter and can be as deep as 1 mm or more of penetration depending on the energy (mJ/cm 2 ) delivered to the tissue 11,12 . At the energy levels used by the authors (80–120 mJ/cm 2 ), the depth of ablation is less than 600 μm, but the coagulation of tissue per ablative microcolumn is 40 μm at each side of the microcolumn, and each microcolumn is still 300 μm in diameter.…”

“…The authors also used a novel approach when using the laser on defocused mode for a second pass over the scars. This defocused mode provided total ablation and coagulation of the surface of the scar, with a shallow penetration of less than 300 μm (like the one delivered using nonfractional YSGG), 11 in addition to the fractionated treatment already delivered. This increased the level of connective tissue remodeling within the treated area without increasing recovery time or side effects for the patients.…”