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Sandblasted large grit, acid etched Ç¥¸é󸮿¡ µû¸¥ ±³Á¤¿ë ¹Ì´Ï ÀÓÇ÷£Æ®ÀÇ Á¦°ÅȸÀü·Â¿¡ °üÇÑ ¿¬±¸

Removal torque of sandblasted large grit, acid etched treated mini-implant

Korean Journal of Orthodontics 2006³â 36±Ç 5È£ p.324 ~ 330
¿À³²Èñ, ±è¼ºÈÆ, ±¹À±¾Æ, À̱ÙÇý, °­À±±¸, ¸ð¼º¼­,
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¿À³²Èñ ( Oh Nam-Hee ) - ±è¿¬Áß¼ÛÀ±ÇåÄ¡°úÀÇ¿ø
±è¼ºÈÆ ( Kim Seong-Hun ) - °¡Å縯´ëÇб³ ÀÇÁ¤ºÎ¼º¸ðº´¿ø Ä¡°ú º¸Ã¶°ú
±¹À±¾Æ ( Kook Yoon-Ah ) - °¡Å縯´ëÇб³ °­³²¼º¸ðº´¿ø ±³Á¤°ú
À̱ÙÇý ( Lee Keun-Hye ) - °¡Å縯´ëÇб³ ¼º°¡º´¿ø ±³Á¤°ú
°­À±±¸ ( Kang Yoon-Koo ) - °¡Å縯´ëÇб³ °­³²¼º¸ðº´¿ø ±³Á¤°ú
¸ð¼º¼­ ( Mo Sung-Seo ) - °¡Å縯´ëÇб³ ¼º¸ðº´¿ø ±³Á¤°ú

Abstract

Sandblasted large grit, acid etched(SLA)Ç¥¸éó¸® µÈ ±³Á¤¿ë ¹Ì´Ï ÀÓÇ÷£Æ®¿Í ÆòÈ°¸éÀ» °¡Áø ±³Á¤¿ë ¹Ì´Ï ÀÓÇ÷£Æ® »çÀÌ¿¡ Á¦°ÅȸÀü·Â°ú Á¶Á÷ÇÐÀû ¼Ò°ßÀ» ÅëÇØ Ç¥¸éó¸®µÈ ±³Á¤¿ë ÀÓÇ÷£Æ®ÀÇ ÀÓ»óÀû °¡´É¼º¿¡ ´ëÇÏ¿© ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù. ½ÇÇèÀç·á·Î´Â ±æÀÌ°¡ 9.5 mm, ¿Ü°æÀÌ 1.8 mmÀÎ custom made, screw shaped, titanium implants°¡ »ç¿ëµÇ¾ú´Ù. ¹Ì´Ï ÀÓÇ÷£Æ®´Â µÎ°³ÀÇ ±ºÀ¸·Î ºÐ·ùµÇ¾ú´Âµ¥ SLA±ºÀº 20°³ÀÇ SLA Ç¥¸éó¸®µÈ ¹Ì´Ï ÀÓÇ÷£Æ®À̾ú°í, ÆòÈ°¸é±ºÀº Å©±â¿Í ÇüÅ°¡ °°Áö¸¸ SLA󸮰øÁ¤ÀÌ »ý·«µÇ¾î Á¦ÀÛµÈ 20°³ÀÇ ¹Ì´Ï ÀÓÇ÷£Æ®·Î ±¸¼ºµÇ¾ú´Ù. À̵éÀº 10¸¶¸® °¡ÅäÀÇ °æ°ñ¿¡ ½Ä¸³µÇ¾ú´Ù. °¢°¢ÀÇ °¡ÅäÀÇ ¿ìÃø °æ°ñ¿¡´Â SLA±ºÀÇ ¹Ì´Ï ÀÓÇ÷£Æ® 2°³°¡ ½Ä¸³µÇ¾ú°í, ÁÂÃø °æ°ñ¿¡´Â ÆòÈ°¸é±ºÀÇ ¹Ì´Ï ÀÓÇ÷£Æ® 2°³°¡ ½Ä¸³µÇ¾ú´Ù. °¢ ±º¿¡´Â ½Ä¸³ Á÷ÈÄ Ni-Ti coil spring¿¡ ÀÇÇØ ¾à 150 gÀÇ Áö¼ÓÀûÀÎ °ßÀηÂÀÌ ÁÖ¾îÁ³´Ù. ½Ä¸³ 6ÁÖ ÈÄ¿¡ 10¸¶¸®ÀÇ °¡Å並 Èñ»ýÇÏ¿´°í, ¾ÈÁ¤µÈ »óÅ¿¡¼­ Ni-Ti coil springÀ» Á¦°ÅÇÏ¿´À¸¸ç digital torque gauge¸¦ ÀÌ¿ëÇÏ¿© Á¦°Å ȸÀü·ÂÀ» ÃøÁ¤ÇÏ¿´´Ù. ½Ä¸³ 6ÁÖ ÈÄ¿¡ SLA±ºÀÇ °æ¿ì (8.29 Ncm) ÆòÈ°¸é±º (3.34 Ncm)¿¡ ºñÇØ ´õ ³ôÀº Æò±Õ Á¦°ÅȸÀü·ÂÀ» ³ªÅ¸³»¾ú°í Á¶Á÷ÇÐÀû ¼Ò°ß¿¡¼­µµ screw ÇϹ濡¼­ÀÇ ½Å»ý°ñ Çü¼ºÀÌ °üÂûµÇ¾ú´Ù. SLA Ç¥¸éó¸®µÈ ¹Ì´Ï ÀÓÇ÷£Æ®´Â ÆòÈ°¸é ¹Ì´Ï ÀÓÇ÷£Æ®¿¡ ºñÇØ Á» ´õ °­ÇÑ ±³Á¤·Â¿¡ ÀúÇ×ÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ¿¹»óµÇ¾ú´Ù.

The purposes of this study were to evaluate the differences between sand blasted, large grit and acid-etched (SLA) treated mini-implants and smooth surface orthodontic mini-implants in relation to the removal torque as well as the histologic analysis. Methods: Custom-made, screw-shaped, titanium implants with a length of 9.5 mm and an outer diameter of 1.8 mm were divided into 2 groups; the SLA group (20 SLA treated orthodontic mini-implants) and the smooth surface group (20 smooth surface mini-implants), and placed In the tibia metaphysis of 10 rabbits. Each rabbit had 4 mini-implants placed, 2 in each tibia. The right tibia were implanted with the SLA group mini-implants and the left tibia had the smooth group mini-implants placed. Each mini-implant group were immediately applied with a continuous traction force of 150 g using a Ni-Ti coil spring. The rabbits were sacrificed 6 weeks post-surgically. Subsequently, the legs were stabilized, the Ni-Ti coil springs were removed and the mini-implants were removed under reverse torque rotation with a digital torque gauge. Results: 6 weeks after placement, the SIA group presented a higher mean removal torque value (8.29 Ncm) than the smooth group (3.34 Ncm) and histologic analysis revealed a higher new bone formation aspect along the screw in the SLA group. Conclusion: Results of this study indicates that SLA treated mini-implants may endure higher orthodontic forces without loosening.

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Ç¥¸éó¸®;Á¦°ÅȸÀü·Â;¹Ì´Ï ÀÓÇ÷£Æ®
Surface treatment;Removal torque;Mini-implant

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