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Chin augmentation using surgical implants can alter the underlying structure of the face, providing better balance to the facial features. The specific medical terms mentoplasty and genioplasty are used to refer to the reduction and addition of material to a patient's chin. This can take the form of chin height reduction or chin rounding by osteotomy, or chin augmentation using implants. This operation is often, but not always, performed at the time of rhinoplasty to help balance the facial proportions. Chin augmentation may be achieved by manipulation of the jaw bone (mandible) and augmentation utilizing this technique usually provides a more dramatic correction than with the use of prosthetic implants. Chin implants are used to build a better profile.〔Aufricht, G: combined plastic surgery of the nose and chin; resume of twenty seven years’ experiences. Am J Surg 1958 Feb;95(2): 231-6〕 Patients' own bone is donated from ribs and from part of the pelvis (the ilium.) Use of donated bone implants in chin augmentation, even the patient’s own, appears to be associated with a higher rate of infection, even after the implant has been in place for decades. Chin augmentation is still popular because it is a relatively easy operation for the patient while producing noticeable changes in the silhouette of the face. This type of surgery is usually performed by an oral and maxillofacial surgeon, otolaryngologist, or plastic surgeon. ==Potential risks and side effects== The usual complications are relatively minor and include swelling, hematoma (blood pooling), weakness or numbness of the lower lip, which usually does not last long. Other, less common risks include infection, bony changes and displacement of the implant.〔Costantino PD. FriedmanCD: Soft-tissue augmentation and replacement in the head and neck. General considerations, Ontolaryngol Clin North Am 1994 Feb;27(1): 1-12〕 Seeking an experienced surgeon can help reduce your risks of complications.〔White JB, Dufresne CR. Management and avoidance of complications in chin augmentation. Aesthet Surg J. 2011 Aug 1;31(6):634-42.〕 Chewing should be kept at a minimum immediately after this procedure, so it may be beneficial for you to find a liquid or soft food diet you enjoy for several days. You may also feel a tight sensation around the chin. However, this typically subsides within a week. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「chin augmentation」の詳細全文を読む スポンサード リンク
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