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NiTi scissors-bite correctorÀÇ ¿ÍÀÌ¾î ±½±â¿¡ µû¸¥ 3Â÷¿øÀû Ä¡¾Æ À̵¿ ¾ç»ó

Three dimensional analysis of tooth movement using different sizes of NiTi wire on NiTi scissors-bite corrector

Korean Journal of Orthodontics 2009³â 39±Ç 1È£ p.43 ~ 53
ÀüÇöÁÖ, ¹Ú¼±Çü, Á¤»óÇõ, ÀüÀ±½Ä,
¼Ò¼Ó »ó¼¼Á¤º¸
ÀüÇöÁÖ ( Jeon Hyun-Ju ) - ÀÌÈ­¿©ÀÚ´ëÇб³ ¸ñµ¿º´¿ø Ä¡°ú±³Á¤°ú
¹Ú¼±Çü ( Park Sun-Hyung ) - ÀÌÈ­¿©ÀÚ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
Á¤»óÇõ ( Jung Sang-Hyuk ) - ÀÌÈ­¿©ÀÚ´ëÇб³ ÀÇ°ú´ëÇÐ ¿¹¹æÀÇÇб³½Ç
ÀüÀ±½Ä ( Chun Youn-Sic ) - ÀÌÈ­¿©ÀÚ´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç

Abstract

º» ¿¬±¸¿¡¼­´Â NiTi scissors-bite corrector¸¦ ¼¼ °¡Áö ¼­·Î ´Ù¸¥ ±½±â 0.018" ¡¿ 0.025", 0.016" ¡¿ 0.022", 0.016"ÀÇ NiTi ¿ÍÀ̾î·Î Á¦ÀÛÇÏ¿´À» ¶§ °¢°¢ÀÇ Ä¡¾Æ À̵¿ ¾ç»óÀ» Ä¡¾Æ À̵¿ ½Ã¹Ä·¹ÀÌ¼Ç ÀåÄ¡ÀÎ Calorific machineÀ» ÀÌ¿ëÇÏ¿© 3Â÷¿øÀûÀ¸·Î ºÐ¼®ÇÏ°íÀÚ ÇÏ¿´´Ù. °¡À§±³ÇÕ¿¡ ÀÌȯµÈ »ó¾Ç Á¦2´ë±¸Ä¡ ¸ðÇüÀ» Á¦ÀÛÇÏ°í Á¦2¼Ò±¸Ä¡¿Í Á¦1´ë±¸Ä¡ »çÀÌ¿¡ ±³Á¤¿ë ¹Ì´Ï ÀÓÇ÷£Æ®(orthodontic mini-implant)¸¦ ½Ä¸³ÇÏ¿© Á¦1´ë±¸Ä¡¿¡ °£Á¢°ñ¼º°íÁ¤¿øÀ» ¼³°èÇÏ¿´´Ù. ¼¼ °¡Áö ±½±âÀÇ NiTi scissors-bite corrector¸¦ ºÎÂøÇÏ¿© ½ÇÇèÇÏ¿´´Ù. Ä¡¾ÆÀÇ À̵¿ ÀüÈÄ¿¡ ½ÇÇè ¸ðÇüÀº computed tomography(CT)·Î ÃÔ¿µÇÏ°í 3Â÷¿ø µ¥ÀÌÅÍ·Î º¯È¯ÇÏ¿© ÁßøÇÏ¿´´Ù. Ä¡¾Æ À̵¿ ¹æÇâ°ú À̵¿·®À» °èÃøÇÏ¿©, NiTi scissors-bite corrector ¿ÍÀÌ¾î ±½±â¿¡ µû¸¥ Ä¡¾Æ À̵¿ ¾ç»ó¿¡ °üÇÑ Åë°èÀû À¯ÀǼºÀ» °ËÁ¤ÇÑ °á°ú, Á¦2´ë±¸Ä¡ Ä¡°üÀÇ ¼³ÃøÀ̵¿·®Àº 0.018" ¡¿ 0.025"±º(2.65 mm)ÀÌ °¡Àå ¸¹¾ÒÀ¸¸ç, 0.016"±º(1.96 mm)°ú Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´´Ù(p £¼ 0.05). Á¦2´ë±¸Ä¡ Ä¡°üÀÇ ¾ÐÇÏ·®Àº 0.018" ¡¿ 0.025"±º(2.35 mm), 0.016" ¡¿ 0.022"±º(1.18 mm), 0.016"±º(1.00mm)À¸·Î 0.018" ¡¿ 0.025"±ºÀÌ ³ª¸ÓÁö µÎ ±º°ú À¯ÀÇÇÑ Â÷À̸¦ º¸¿´°í (p £¼ 0.05), Ä¡±ÙÀÇ ¾ÐÇÏ·®Àº 0.018" ¡¿ 0.025"
±º(4.19 mm), 0.016" ¡¿ 0.022"±º(3.29 mm), 0.016"±º(2.24 mm)À¸·Î ¼¼ ±º °£ ¸ðµÎ Åë°èÀû À¯ÀÇÂ÷¸¦ º¸¿´´Ù (p £¼0.05). Ä¡¾ÆÀÇ À̵¿ ¾ç»óÀ» °üÂûÇÑ °á°ú, 0.016"±º¿¡¼­´Â Á¦2´ë±¸Ä¡ Ä¡±ÙÀÇ ÇùÃø À̵¿ÀÌ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù. °£Á¢°ñ¼º°íÁ¤¿øÀ¸·Î »ç¿ëµÈ Á¦1´ë±¸Ä¡ÀÇ °íÁ¤¿ø ¼Ò½ÇÀº 0.2 mm ÀÌÇÏ·Î ³ªÅ¸³µ´Ù. ÀÌ»óÀÇ °á°ú¸¦ Åä´ë·Î 0.018" ¡¿ 0.025" NiTi¿ÍÀ̾î·Î Á¦ÀÛÇÑ NiTi scissors-bite corrector¸¦ ±³Á¤¿ë ¹Ì´Ï ÀÓÇ÷£Æ®¸¦ ÀÌ¿ëÇÑ °£Á¢°ñ¼º°íÁ¤¿ø°ú ÇÔ²² ÀÌ¿ëÇÏ¿´À» ¶§, ÃÖ¼ÒÇÑÀÇ °íÁ¤¿øÀÇ ¼Ò½Ç°ú ÇÔ²² °¡Àå Å« »ó¾Ç Á¦2´ë±¸Ä¡ÀÇ ¼³Ãø À̵¿ ¹× ¾ÐÇÏ°¡ ÀϾ´Ù°í ÇÒ ¼ö ÀÖ´Ù. (´ëÄ¡±³Á¤Áö 2009;39(1):43-53)

Objective: The purpose of this study was to compare the difference in three dimensional tooth movement using three different wire sizes (0.018 ¡¿ 0.025-in, 0.016 ¡¿ 0.022-in, 0.016-in) on a NiTi scissors-bite corrector.

Methods: Computed tomography (CT) images of the experimental model before and after tooth movement were taken and reconstructed into three dimensional models for superimposition. The direction and the amount of tooth movement were measured and analyzed statistically.

Results: The lingual and intrusive movements of the crown of the maxillary second molar were increased as the size of the NiTi wire increased. The roots of the maxillary second molars moved buccally except for the 0.016-in group. The intrusive movement of the roots of the maxillary second molars was increased as the size of the NiTi wire increased. Due to the use of orthodontic mini-implants, anchorage loss was under 0.2 mm on average.

Conclusions: The 0.018 ¡¿ 0.025-in NiTi wire was most effective in lingual and intrusive movement of the maxillary second molar which was in scissors-bite position. Indirect skeletal anchorage with a single orthodontic mini-implant was rigid enough to prevent anchorage loss. (Korean J Orthod 2009;39(1):43-53)

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°¡À§±³ÇÕ; NiTi scissors-bite corrector; Calorific machine; °£Á¢°ñ¼º°íÁ¤¿ø

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