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  Space Closing Archwire(EN MASSE MOVEMENT)(6)

 

 

 

Double Delta Retraction Archwire (DDRA)

 

1. turretÀ¸·Î Åë»óÀûÀÎ anterior curvature¸¦ Çü¼ºÇÑ ÈÄ ±¸°­ ³»¿¡¼­ lateral incisorÀÇ distal surfaceÈÄ¹æ   1mm ÁöÁ¡À» markingÇÑ´Ù.(.016  x .016 blue elgiloy)

 

2. Tweed arch bending plier·Î 90µµ bendingÇÏ¿© vertical stepÀ» Çü¼ºÇÑ´Ù.

 

3. vertical stepÀÇ 8mmµÇ´Â Á¡À» marking Çϰí omege loop forming plier·Î delta loopÀ» Çü¼ºÇÑ´Ù.

4. archwireÀÇ main curvature¿Í delta loopÀÇ base °¡ 2mm separationµÇ¸é¼­ main curvature¿Í ÆòÇàÇϵµ·Ï bendingÇÑ´Ù.

5. ÀÌ¹Ì Çü¼ºµÈ ÇÑÂÊÀÇ delta loop°ú ¸ð¾ç ¹× Å©±â°¡ ´ëĪÀÏ ÀÌ·çµµ·Ï ¹Ý´ëÆí  delta loopÀ» Çü¼ºÇÑ´Ù.

6. ¿ø·¡ °ßÄ¡ º¸´Ù ±Ù½É¿¡ canine offset bend¸¦ À§ÇÑ markingÀ» Çϰí bendÇÑ´Ù.

 

7. archwire°¡ activationµÉ ¾çÀ» °í·ÁÇÏ¿© 2nd premolar ¹× molar offset bend¸¦ ½ÃÇàÇÑ´Ù.

 

8. ÀüÄ¡ºÎÀÇ bodily retractionÀ» À§ÇØ anterior segment¿¡ torque¸¦ ºÎ¿©ÇÑ´Ù.

   ±¸Ä¡ºÎ´Â axial inclination¿¡ ¸Âµµ·Ï touque¸£ ºÎ¿©ÇÑ´Ù.

 

 

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