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Comparison of shaping ability between various hybrid instrumentation methods with ProTaper

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Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº $ProTaper\^{(R)}$ S1°ú 3°¡Áö Á¾·ùÀÇ ÆÄÀÏÀ» °¢°¢ °°ÀÌ »ç¿ëÇϴ ȥÇÕ¹ýÀÇ ±Ù°ü¼ºÇü È¿À²À» ºñ±³ÇØ º¸´Â °ÍÀÌ´Ù. 5³â ÀÌ»óÀÇ ÀÓ»ó°æ·ÂÀ» °¡Áø Ä¡°úÀÇ»ç 20¸íÀÌ Ni-TiÆÄÀÏ °æÇèÀÚ±º°ú ºñ°æÇèÀÚ±ºÀ¸·Î ³ª´µ¾î, $ProTaper\^{(R)}$¸¸À» »ç¿ëÇÑ C±º°ú $ProTaper\^{(R)}$ S1°ú ÇÔ²² ¼¼ Á¾·ùÀÇ ÆÄÀÏ ½Ã½ºÅÛ- $ProFile\^{(R)}$ (P±º), $HeroShaper\^{(R)}$ (H±º), $K-Flexofile\^{(R)}$ (S±º)À» È¥ÇÕ Àû¿ëÇÏ¿©, °¢°¢ÀÇ ¹æ¹ýÀ¸·Î ·¹Áø ±Ù°üÀ» ¼ºÇüÇÏ¿´´Ù. ¼ºÇü ÀüÈÄ À̹ÌÁö¸¦ Áßø ½ÃÄÑ ±Ù°üÇüÅ ÀÌ»óÀ» Á¶»çÇÏ°í, ±Ù´Ü°øºÎÅÍ 1, 2, 3mm À§Ä¡¿¡¼­ ±Ù°ü Æø°æÀÇ º¯È­·®, Á᫐ º¯À§À²À» »êÃâ, ºñ±³ÇÏ¿© ´ÙÀ½ÀÇ °á°ú¸¦ ¾ò¾ú´Ù. C±º°ú S±º ¸ðµÎ ´Ù¸¥ ½ÇÇ豺¿¡ ºñÇØ ¼ºÇü½Ã°£ÀÌ ¸¹ÀÌ ¼Ò¿äµÇ¾ú´Ù. °æÇèÀÚ±º¿¡ ºñÇØ ºñ°æÇèÀÚ±º¿¡¼­´Â C±º°ú H±º¿¡¼­ ´õ ¸¹Àº ½Ã°£ÀÌ ¼Ò¿äµÇ¾ú´Ù P±ºÀÇ Á߽ɺ¯À§À²Àº $ProTaper\^{(R)}$¸¸À» »ç¿ëÇÑ C±ºÀ̳ª SSÆÄÀÏÀ» »ç¿ëÇÑ S±ºº¸´Ù ¾çÈ£ÇÏ¿´´Ù. ¸¶Âù°¡Áö·Î, °æÇèÀÚ±ºÀÇ °æ¿ì¿¡¼­´Â P±º¿¡ Ãß°¡ÇÏ¿© H±ºµµ ´õ ³ªÀº °á°ú¸¦ º¸¿´´Ù (p<0.05). ÀÌ ½ÇÇè Á¶°ÇÇÏ¿¡, $ProFile\^{(R)}$°ú $HeroShaper\^{(R)}$¸¦ »ç¿ëÇÑ È¥ÇÕ¹ýÀÌ $ProTaper\^{(R)}$¸¸À» »ç¿ëÇÑ ¼ºÇü¹æ¹ýº¸´Ù ´õ¿í ÃßõµÈ´Ù.

The purpose of this study was to compare and evaluate the shaping abilities of various hybrid instrumentation method using constant tapered file systems with $ProTaper\^{(R)}$ S1 and the difference between experts and inexperienced clinicians in use of NiTi file. Three hybrid methods used in this study were composed of $ProTaper\^{(R)}\;S1\;and\;K-Flexofile\^{(R)}\;(group S),\;ProTaper\^{(R)}\;S1\;and\;HeroShaper\^{(R)}\;(group\;H),\;and\;ProTaper\^{(R)}\;S1\;and\;ProFile\^{(R)}\;(group\;P)$respectively. The $ProTaper\^{(R)}$-alone method (group C) was introduced as a control group. After canal preparation, the lapse of time was recorded. The images of pre- and post-operative canal were scanned and superimposed. Amounts of instrumented canal widths and centering ratio were measured at apical 1, 2 and 3 mm levels and statistical analysis was performed In this study. both of the group C and S took more time to prepare canals than other groups, Inexperienced operators required more time for the entire preparation with the groups C and H than the experienced (p<0.05). And the centering ratio of group P were preferable to $ProTaper\^{(R)}$-alone method or the hybrid technique using stainless steel files. As such, within experienced operators, group H also showed better results in addition to the group P. Under these condition, the hybrid methods of each the $ProFile^{(R)}$ system and $HeroShaper^{(R)}$ with ProTaper are recommendable comparative to $ProTaper\^{(R)}$-alone method. According to the results, the hybrid instrumentation method is a more appropriate method of canal preparation than single file system for narrow or curved canals.

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È¥ÇÕ¹ý;ºñ°æÇèÀÚ;°æÇèÀÚ;Hybrid method;Inexperienced;Experienced;ProTaper;ProFile;Heroshaper

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