eMedicine Specialties > Plastic Surgery > Skin
Skin Resurfacing, Erbium YAG Laser: Follow-up
Updated: Feb 16, 2009
Outcome and Prognosis
Improvement after Er:YAG resurfacing is related to the patient's skin type and the amount of photodamage. Patients categorized in Fitzpatrick and Glogau types I and II generally have 50% improvement in rhytides and atrophic scars.7,45,46
Patients with darker skin still have acceptable results, and the relatively lower risk of hyperpigmentation compared with more penetrating lasers makes the Er:YAG system the recommended modality.47
Future and Controversies
The versatility of the Er:YAG lasers suggests several potential modifications of the original operative technique. The laser can be used to ablate the epidermis, and then it can be reset to coagulate within the dermis at various levels to stimulate more collagen formation. The optimal depth within the dermis remains to be determined.
Another use under investigation is to ablate residual thermal damage after carbon dioxide laser resurfacing or even after deep Er:YAG lasing; removal of the proinflammatory coagulated tissue could result in less erythema and faster healing, but the tissue removed could be needed to stimulate new collagen formation. Preliminary work suggests that no significant difference is noted in the amount of collagen injury, inflammation, and new collagen formation between various combinations of the Er:YAG and carbon dioxide lasers soon after treatment.7,48,17
New Er:YAG lasers are being tested that produce high fluence values and smaller pulse durations, which, when used with a cryogen to cool the epidermis, allow the laser energy to spare the epidermis and only ablate and coagulate the dermis. Subepidermal laser resurfacing is attractive to patients who do not have a significant amount of photodamage because it reduces the erythema and edema associated with laser resurfacing. These nonablative techniques were introduced with Nd:YAG lasers and intense pulsed light systems, which are currently challenging the market share of the Er:YAG lasers.49
The latest innovation is fractional photothermolysis with Er:YAG laser (eg, PROfractional [Sciton Inc., Palo Alto, Calif], Pixel [Alma Lasers Ltd, Caesarea, Israel], Fraxel [Reliant Technologies, Mountain View, Calif]). This technique is based on creating spatially precise microscopic thermal wounds. The wounds created by the laser are narrow, sharply defined columns of skin known as microscopic thermal zones. According to preliminary reports, this resurfacing technique has been shown to be both safe and effective for improving facial and nonfacial photodamage, atrophic acne scars, hypopigmented scars, and dyspigmentation.50,51 Healing time is 3-6 days. Because only a fraction of the skin is treated during a single session, a series (typically, 4 treatments) of fractional resurfacing at 4-wk intervals is required for the best clinical improvement.50,51These techniques, while becoming more popular because of the easier recovery, may fall into disfavor if the results are not long-lasting and if the complications of scarring increase. The results of ongoing and future clinical trials will establish the relative effectiveness and indications of the Er:YAG and other types of lasers.
Outward beauty is not enough, and the woman who would appear fair must not be content with any common manner. Words, wit, play, sweet talk and laughter, surpass the work of too simple nature. —Pliny the Elder
The authors and editors of eMedicine gratefully acknowledge the contributions of previous authors Daniel N Ronel, MD, FAAP, FACS; Marvin Spann, MD; Martin Newman, MD, FACS; and William B Nolan, MD; to the development and writing of this article.
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Further Reading
Keywords
erbium, facial rejuvenation, laser skin surgery, facial wrinkle removal, CO2 laser, carbon dioxide laser, erbium:yttrium-aluminum-garnet laser, Er:YAG laser, pulsed laser surgery, selective photothermolysis, photothermolysis, scar removal, wrinkle removal rhytid removal, rhytide removal, photodamage, photo damage, acne scar treatment, varicella scar treatment, chicken pox scar, dyschromia, solar keratosis, melasma, lentigines, compound nevi, compound nevus, sebaceous hyperplasia, trichoepithelioma, miliary osteoma, syringoma, telangiectasia, rhinophyma, adenoma sebaceum, hidradenoma, xanthelasma, Hailey-Hailey disease, Darier's disease, Darier disease, keratosis follicularis, pemphigus, wrinkling, scaling, dyspigmentation, telangiectasia, skin laxity
Follow-up: Skin Resurfacing, Erbium YAG Laser