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Switching Genioplasty- a New Genioplasty Technique in Order to Resolve Asymmetry of Chin Area: Case Report

¼­Çö¼ö, ÀÌ¿µÁÖ, º¯±¤¼·, È«¼ø¹Î, ¹ÚÁØ¿ì, È«Áö¼÷, ¹Ú¾çÈ£,
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¼­Çö¼ö ( Seo Hyun-Soo ) - ÇѸ²´ëÇб³ °­µ¿¼º½Éº´¿ø ±¸°­¾Ç¾È¸é¿Ü°ú
ÀÌ¿µÁÖ ( Lee Young-Joo ) - ÇѸ²´ëÇб³ °­µ¿¼º½Éº´¿ø ±¸°­¾Ç¾È¸é¿Ü°ú
º¯±¤¼· ( Byeon kwang-Seob ) - ÇѸ²´ëÇб³ °­µ¿¼º½Éº´¿ø ±¸°­¾Ç¾È¸é¿Ü°ú
È«¼ø¹Î ( Hong Soon-Min ) - ÇѸ²´ëÇб³ °­µ¿¼º½Éº´¿ø ±¸°­¾Ç¾È¸é¿Ü°ú
¹ÚÁØ¿ì ( Park Jun-Woo ) - ÇѸ²´ëÇб³ °­µ¿¼º½Éº´¿ø ±¸°­¾Ç¾È¸é¿Ü°ú
È«Áö¼÷ ( Hong Ji-Sook ) - ÇѸ²´ëÇб³ °­µ¿¼º½Éº´¿ø Ä¡°ú±³Á¤Çб³½Ç
¹Ú¾çÈ£ ( Park Yang-Ho ) - ÇѸ²´ëÇб³ °­µ¿¼º½Éº´¿ø Ä¡°ú±³Á¤Çб³½Ç

Abstract


Conventional slinding genioplsty has the risk of mental nerve injury after operation and difficult to correct vertical asymmetry of chin. So, authors propose a new genioplasty to correct asymmetry of chin. Switching genioplasty is a modification method of conventional genioplasty. Between mandibular right and left canine, osteotomy line of triangular shape make until mandibular lower border. In large side, osteotome line of wedge shape is added to reduction. After osteotomy, segment of wedge shape was separated from chin. Distal segment was rotated to reduction side. Because of rotation of distal segment, space is made in opposite side. Seperated segement of wedge shape from large side is switched this space to fill. So, stability of distal segment is achieved. Authors applied to swiching genioplasty the patients who was remained the chin asymmetry after both sagittal split ramus osteotome was done because mandible asymmetry. After operation, patient and operator were satisfied with excellent esthetic results without any other complication. The switching genioplasty is effective surgical technique for chin asymmetry because it has more advantages than conventional sliding genioplasty. First, other donor side does not need for bone graft. Second, the switching genioplasty can reduce infection, bone resroption, dehiscence, capsular contraction after allograft. Third, have little mental nerve damage. Forth, anteroposterior correction is possible. Fifth, operation time is less than other genioplasty for chin asymmetry.

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Chin asymmetry; Switching genioplasty

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