Introduction
For the individual desiring to rejuvenate his or her face by treating perioral signs of aging, there are many options available, including use of botulinum toxin, injectable fillers, microimplants, and combination therapy. These include soft tissue fillers that may be synthetic, animalderived, human-derived, or autologous–the latter harvested from the patient’s own vein or fat. The primary action of these products and techniques is to induce collagen formation and/or occupy volume and space. The dermatologist or cosmetic surgeon can assess the patient’s needs and desires and propose a course of treatment from among available products and techniques. Fillers are categorized as permanent, semipermanent, and temporary. The majority of injectable fillers are temporary, lasting from several weeks to several months, although some reportedly last 9–12 months. Many of these processes require ongoing treatment to maintain the desired appearance. Injectable microimplants are, for the most part, semipermanent, although some newer products containing microspheres are temporary. Synthetic implants are permanent, remaining in place unless removed surgically; human-derived or cadaverderived implants, while long lasting, do not appear to last indefinitely. Finally, autologous implants and injectables vary in their longevity. Each type of soft tissue filler or implant has its own advantages and disadvantages. Candidates for treatment must consider factors such as product availability, treatment complexity (number of required serial treatment sessions), necessity for local anesthesia, longevity of augmentation, contraindications, allergy testing, potential complications, cost, and technical expertise required of clinicians. General contraindications include any active disease (including diabetes) that may affect risk or outcome; disorders involving collagen, scarring, or connective tissue; lupus (dependent on type of treatment); recent treatment with isotretinoin; and clotting problems. Each type of treatment may have additional contraindications, and these are discussed in the appropriate section below. New products and techniques are being developed at a rapid pace in numerous countries. Clinical trials are in progress for many products. Product availability varies widely, and a variety of products are being used off-label. Dermatologists and cosmetic surgeons should regularly review treatment options to provide the best care possible for patients. | ||||||||||||
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