الفهرس 
Wound healing
Hypertrophic scarOnly 14 pages are availabe for public view
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Abstract
Summary Scars are the most important long-term complication of the wound healing process. Scarring of the skin affects millions of patients and may causes a great deal of suffering. They can significantly impact the physical and psychological functions of the patient. There is a broad spectrum of scar types, ranging from a fine line to a variety of abnormal scars such as atrophic scars, scar contractures, hypertrophic scars, and keloids. Hypertrophic scars result from overgrowing connective tissue and appear as pigmented or erythematous raised nodules or plaques confined to the original wound site. Atrophic scars are dermal depressions that generally occur as a result of collagen destruction during post traumatic healing and an inflammatory skin disease. Various treatments depending on the scar type have been used including silicone gel sheets, pressure garments, corticosteroid therapy, tissue augmentation, dermabrasion, surgical excision, chemical peels, and laser treatments. Laser-based scar resurfacing is considered to be one of the most effective treatment options for all types of scars. Ablative lasers used for skin resurfacing can reduce various scars, but significant adverse effects limit their use. Fractional resurfacing creates longitudinal microthermal zones (MTZs) which are separated by untreated skin with an intact epidermis. These microthermal zones (MTZs) are so small that curing of the damaged tissue occurs rapidly without significant fibrosis. The close proximity of the surrounding viable tissue facilitates the healing. This bypasses many of the disadvantages of the traditional ablative laser.