摘要: IT HAS been reported that sandpaper abrasion of the skin is an effective method for correction acne scars 1 and tattoo marks. 2 As a routine treatment, however, it was considered this procedure had certain inherent drawbacks. In first place, administration general anesthetic, with known risk involved, may not be advisable in reconstructive operation. The inhalation apparatus interferes on facial area, which, course, commonest operative site. Secondly, presents relatively broad surface which makes difficult to treat irregular contours does permit differential adjacent areas. possibility silica granulomas caused by small buried particles must as calculated risk. Despite these disadvantages, clinical benefit cases such warrant further experiment technique. After five years trial, successful modification has