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Noncompliance screw supported maxillary molar distalization in a parallel manner

Korean Journal of Orthodontics 2010³â 40±Ç 4È£ p.250 ~ 259
Nalcaci Ruhi, Bicakci Altu? Ali, Ozan Fatih,
¼Ò¼Ó »ó¼¼Á¤º¸
 ( Nalcaci Ruhi ) - Cumhuriyet University Faculty of Dentistry Department of Orthodontics
 ( Bicakci Altu? Ali ) - Cumhuriyet University Faculty of Dentistry Department of Orthodontics
 ( Ozan Fatih ) - Turkey Ankara Mevki Military Hospital

Abstract

»ó¾Ç ±¸Ä¡ÀÇ ÈĹæÀ̵¿À» À§ÇÑ ±¸°­ ³» ÀåÄ¡ Áß È¯ÀÚÀÇ ÇùÁ¶¸¦ ÇÊ¿ä·Î ÇÏÁö ¾Ê´Â ¹æ¹ýÀº Á¦II±Þ ºÎÁ¤±³ÇÕÀÇ °³¼±¿¡ ¼º°øÀûÀ¸·Î ³Î¸® »ç¿ëµÇ°í ÀÖ´Ù. º» ¿¬±¸´Â ½ºÅ©·ù¿¡ ÀÇÇØ ÁöÁöµÇ´Â ±¸°­ ³» ÈĹæÀ̵¿ ÀåÄ¡¸¦ ¼Ò°³ÇÏ°í ±× È¿À²¼ºÀ» Á¶»çÇÏ°íÀÚ ÇÏ¿´´Ù. Angle Class II ºÎÁ¤±³ÇÕÀ¸·Î Áø´ÜµÈ 21¸íÀÇ È¯ÀÚ(¿©ÀÚ 11¸í, ³²ÀÚ 10¸í; Æò±Õ ¿¬·É 14.9¼¼)¸¦ ´ë»óÀ¸·Î ÇÏ¿´´Ù. 2°³ÀÇ ½ºÅ©·ù¸¦ incisive foramen ÈĹ濡 ½Ä¸³ÇÏ°í, ½Ä¸³ÇÑ Áï½Ã ÈûÀ» ÁÖ¾î »ó¾Ç Á¦1´ë±¸Ä¡ÀÇ ÈĹæÀ̵¿¿¡ »ç¿ëÇÏ¿´´Ù. »ó¾Ç ±¸Ä¡¸¦ ÈĹæÀ̵¿½ÃÄÑ Á¦I±Þ ±¸Ä¡°ü°è¸¦ ¾ò±â À§ÇØ ½ºÅ©·ù¿¡ ÀÇÇØ ÁöÁöµÇ´Â ±¸°­ ³» ÈĹæÀ̵¿ ÀåÄ¡¸¦ »ç¿ë ÇÏ¿´´Ù. Ä¡·á ÀüÈÄ Ãø¸ðµÎºÎ ¹æ»ç¼± »çÁø°ú 3Â÷¿ø ¸ðµ¨ ºÐ¼®À» ÅëÇØ °ñ°Ý ¹× Ä¡¾ÆÀÇ º¯È­¸¦ Æò°¡ÇÏ¿´´Ù. ¿¬±¸°á°ú »ó¾Ç ±¸Ä¡´Â Æò±Õ 3.95 mm ÈĹæÀ̵¿ÇÏ¿´°í, Ãß°¡ÀûÀÎ °íÁ¤¿ø ¼Ò½Ç ¾øÀÌ Á¦I±Þ ±¸Ä¡°ü°è¸¦ È®¸³ÇÏ¿´´Ù. »ó¾Ç ´ë±¸Ä¡´Â 1.49o ÈĹæ°æ»çµÇ¾ú°í, ȸÀüµÈ Á¤µµ´Â ÁÂ¿ì °¢°¢ 0.74o, 0.54oÀ¸·Î Åë°èÀûÀ¸·Î À¯ÀǼºÀÖ´Â º¯È­¸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù (p £¾ 0.05). »õ·Ó°Ô °í¾ÈµÈ ÀåÄ¡´Â ½ºÅ©·ù¿¡ ÀÇÇØ ÁöÁöµÇ¾î ȯÀÚÀÇ ÇùÁ¶µµ¸¦ ¿äÇÏÁö ¾ÊÀ¸¸ç Ưº°ÇÑ °íÁ¤¿ø ¼Ò½Ç ¾øÀÌ ±¸Ä¡ÀÇ Ä¡Ã¼À̵¿À» ÅëÇÑ ÈĹæÀ̵¿À» ¾ò´Â µ¥ È¿°úÀûÀÎ °ÍÀ¸·Î ÆǴܵȴÙ.

Objective: Intraoral noncompliance upper molar distalization techniques have gained in popularity and have subsequently found to be successful in Class II correction. The aim of the present study was to introduce a screw supported intraoral distalization appliance and investigate its efficiency.

Methods: Twenty-one subjects (11 females, 10 males; average age of 14.9 years) with Angle Class II malocclusion participated in this study. Two screws were inserted behind the incisive foramen and immediately loaded to distalize the upper first molars. An intraoral screw supported distalization appliance was used to distalize the upper molars in order to achieve a Class I molar relationship. Skeletal and dental changes were evaluated using cephalometric and three-dimensional (3D) model analysis.

Results: Upper molars were distalized 3.95 mm on average and a Class I molar relationship was achieved without any anchorage loss. The upper molars were tipped only 1.49¡Æ and the upper right and left molars were rotated only 0.54¡Æ and 0.74¡Æ respectively which were statistically non-significant (p > 0.05).

Conclusions: The newly designed screw supported noncompliance distalization appliance was found to be an effective device for achieving bodily molar distalization without any anchorage loss.

Å°¿öµå

±¸Ä¡ºÎ ÈĹæÀ̵¿; 3Â÷¿ø ¸ðÇüºÐ¼®; °ñ¼º°íÁ¤¿ø
Molar distalization; Three-dimensional model analysis; Skeletal anchorage

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