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Although ‘small chin’ is not a medical terminology, it is widely used between non-medical persons and even between medical doctors. But there are two kinds of diagnosis which look small chin. One is microgenia and another is micrognathia and because they called as a same name ‘small chin’, sometimes they are confused and result in suboptimal operation result. Microgenia can be treated by advancing sliding genioplasty, implant insertion and sometime by fat grafting. And micrognathia must be treated by orthognathic surgery theoretically. But many times advancing sliding genioplasty, implant insertion or fat grafting are applied to micrognathia. Sometime it was done by misdiagnosis but sometimes it is done intentionally to avoid orthognathic sugery which is considered as a complicated operation to the peoples who are unfamiliar to it. Sometimes it results in somewhat acceptable result, but it is not the best. So in this article, the author is going to discuss about the different results of orthgnathic surgery and camouflage sliding advancing genioplasty. (Archives of Aesthetic Plastic Surgery 17: 75, 2011)