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A COMPARATIVE STUDY OF THE CANAL CONFIGURATION AFTER SHAPING BY PROTAPER ROTARY AND HAND FILES IN RESIN SIMULATED CANALS

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Abstract

º» ¿¬±¸´Â ÇüÅ ¹× ÀçÁúÀÌ µ¿ÀÏÇÑ ¿£Áø±¸µ¿Çü ProTaperÆÄÀÏ°ú ¼öµ¿Çü ProTaperÆÄÀÏÀ» ÀÌ¿ëÇÏ¿© ·¹Áø¸ðÇü±Ù°üÀ» ¼ºÇüÇÑ ÈÄ ±Ù°üÇüÅ º¯È­¸¦ ºñ±³ ºÐ¼®ÇÏ°íÀÚ ½ÃÇàµÇ¾ú´Ù. º» ¿¬±¸¿¡¼­´Â ·¹Áø¸ðÇü±Ù°üÀ¸·Î ÃÑ 40°³ÀÇ JÀÚ¿Í SÀÚÀÇ ±Ù°ü ÇüÅ°¡ ÀçÇöµÈ ENDO-TRAINING BLOCÀ» »ç¿ëÇÏ¿´´Ù. ±Ù°ü ¼ºÇü ±â±¸·Î´Â ¿£Áø±¸µ¿Çü Ni-Ti ÆÄÀÏ·Î $ProTaper^{TM}$, ¼öµ¿Çü Ni-Ti ÆÄÀÏ·Î $ProTaper^{(R)}$ For Hand Use¸¦ »ç¿ëÇÏ¿´´Ù. »ç¿ëµÈ ·¹Áø¸ðÇü±Ù°ü°ú ÆÄÀÏÀÇ Á¾·ù¿¡ µû¶ó 10°³¾¿ 4°³ÀÇ ±×·ìÀ¸·Î ³ª´©¾î ±Ù°ü¼ºÇüÀ» ½ÃÇàÇÏ¿´´Ù. ±Ù°ü ¼ºÇü Àü$\cdot$ÈÄ À̹ÌÁö¸¦ ½ºÄ³³Ê (Color scanner, UMAX Technologies, Inc., USA)¸¦ ÀÌ¿ëÇÏ¿© ¾òÀº ÈÄ. Photoshop 7.0 ÇÁ·Î±×·¥ (Adobe System Inc., USA)À» ÀÌ¿ëÇÏ¿© À̹ÌÁö¸¦ ÁßøÇÏ¿´´Ù. À̹ÌÁö ºÐ¼® ÇÁ·Î±×·¥ (Image-$Pro^{(R)}$ Plus, Media Cybernetic, USA)À» ÀÌ¿ëÇÏ¿© Ä¡±Ù´Ü ÂÊ¿¡¼­ºÎÅÍ 0, 1, 2, 3, 4, 5, 6 ¹× 7 mm ¼öÁØ¿¡¼­ ±Ù°ü ¼ºÇü¿¡ µû¸¥ ±Ù°üÀÇ ³»Ãø ¹× ¿ÜÃø Æø°æÀÇ º¯È­·®, ±Ù°ü ÃÑÆø°æÀÇ º¯È­·®, ±Ù°ü Áß½ÉÃàÀÇ º¯À§·®À» ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ ±Ù°ü ¼ºÇü ½Ã°£À» ±â·ÏÇÏ¿´´Ù. µÎ ±â±¸ »çÀÌÀÇ À¯ÀǼº °ËÁ¤À» À§ÇØ µ¶¸³ Ç¥º» t-°ËÁ¤À» ½ÃÇàÇÏ¿©, ±Ù°ü ¼ºÇü ½Ã ¼öµ¿Çü ProTaper ÆÄÀÏÀÌ ¿£Áø±¸µ¿Çü ProTaper ÆÄÀÏ¿¡ ºñÇØ ±Ù°ü Áß½ÉÃàÀÇ º¯À§°¡ À¯ÀÇÇÏ°Ô ´ú ÀϾ¸ç ±Ù°üÀÇ ¿ø·¡ ÇüŸ¦ ´õ¿í Àß À¯ÁöÇÒ ¼ö ÀÖÁö¸¸, ±Ù°ü ¼ºÇü½Ã°£Àº ±æ¾îÁú ¼ö ÀÖ´Ù´Â °á·ÐÀ» ¾ò¾ú´Ù.

The purpose of this study was to compare the canal configuration after shaping by ProTaper rotary files and ProTaper hand files in resin simulated canals. Forty resin simulated canals with a curvature of J-shape and S-shape were divided into four groups by 10 blocks each Simulated root canals in resin block were prepared by ProTaper rotary files and ProTaper hand files using a crown-down pressureless technique All simulated canals were prepared up to size $\#25$ file at end-point of preparation. Pre- and post-instrumentation images were recorded with color scanner. Assessment of canal shape was completed with an image analysis program. Measurements were made at 0, 1, 2, 3, 4, 5, 6 and 7 mm from the apex. At each level, outer canal width, inner canal width, total canal width, and amount of transportation from original axis were recorded. Instrumentation time was recorded. The data were analyzed statistically using independent t-test. The result was that ProTaper hand files cause significantly less canal transportation from original axis of canal body and maintain original canal configuration better than ProTaper rotary files, however ProTaper hand files take more shaping time.

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