Ablative and Nonablative Facial Resurfacing

摘要: Ablative resurfacing was first introduced in the mid 1990s. Technological advancements with carbon dioxide (CO2) lasers had emerged to minimize their thermal impact on tissue and, subsequently, possible clinical uses were explored. Two types of CO2 developed. The utilized ultrashort pulse durations heat deposition tissue. other laser beam a continuous wave (CW) mode, conjunction scanning device, shorten dwell time thereby, damage (Lask et al. 1995). These used for treatment rhytides and acne scars; however, investigators soon discovered that superficial sun changes, including lentigines, as well actinic keratoses, fine lines, imperfections also improved. Additionally, noted cause tissue-tightening effect, which softened deeper wrinkles (Fitzpatrick 2000). proved be very effective; technology expanded into dermatologic plastic surgeon’s armamentarium, it found have significant side effects, especially inexperienced hands. Many patients experienced erythema lasted weeks months temporary hyperpigmentation, acne, contact sensitivity topical products. Yeast, bacterial, viral infections potential problem. Prolonged hypopigmentation scarring, although infrequent, great concern. In an effort decrease risk/side effect profile, use erbium explored (Zachary 2000) short-pulsed lasers, stronger water absorption at 2.94 μm less injurious tissues; they ablated but left little residual damage. Unfortunately became apparent this laser, good smoothing out surface, did not lead same tightening lasers. next level advancement entailed increasing width include some heat, would allow (Pozner Goldberg addition, developed combined both by component pure ablation component. benefit great; effects continued present (Tanzi Alster 2003). A recent paper showed utilizing anesthetic, hydrated skin, minimized even Nonablative Facial Resurfacing