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A COMPARATIVE STUDY ON THE CANAL CONFIGURATION AFTER SHAPING BY PROFILE, $PROTAPER^{TM}$ AND K-FLEXOFILE IN SIMULATED CANALS WITH DIFFERENT ANGLES OF CURVATURE

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Abstract

º» ¿¬±¸´Â ProFile, ProTaper ¹× K-Flexofile·Î ±Ù°ü ¼ºÇü½Ã ±Ù°üÀÇ ¸¸°îµµ¿¡ µû¶ó ±Ù°üÀÇ ÇüÅ°¡ ¾î¶»°Ô º¯È­ÇÏ´ÂÁö¸¦ ºñ±³ ºÐ¼®ÇÏ°íÀÚ ½ÃÇàµÇ¾ú´Ù. ISO $\sharp$15 finger spreader¸¦ 15µµ, 30µµ ¹× 45µµ·Î ¸¸°î½ÃÅ°°í ¿¡Æø½Ã ·¹ÁøÀ¸·Î °¢°¢µµÀÇ ±Ù°üÀ» °®´Â 30°³ÀÇ ±Ù°ü ¸ðÇüÀ» Á¦ÀÛÇÏ¿´´Ù. ±Ù°üÀÇ ±æÀÌ´Â 18mm·Î ÇÏ¿´°í ±Ù°üÀÇ ¸¸°îÀº ±Ù°üÀÇ ÀÔ±¸·ÎºÎÅÍ 10mm ºÎÀ§¿¡¼­ ½ÃÀÛÇϵµ·Ï Á¦ÀÛÇÏ¿´´Ù. ±Ù°ü ¼ºÇü¿¡´Â ¿£Áø ±¸µ¿Çü ´ÏÄÌ-ŸÀÌŸ´½ ÆÄÀÏÀÎ ProFile°ú ProTaper, ¼öµ¿Çü stainless steel ÆÄÀÏÀÎ K-FlexofileÀ» »ç¿ëÇÏ¿´´Ù. ProFile°ú ProTaper´Â Á¦Á¶ÀÚÀÇ Áö½Ã¿¡ µû¶ó Å©¶ó¿î´Ù¿î¹ýÀ¸·Î ±Ù°ü ¼ºÇüÇÏ¿´°í, K-FlexofileÀº ½ºÅܹé¹ýÀ¸·Î ±Ù°ü ¼ºÇüÇÏ¿´´Ù. ±Ù÷ºÎ ¼ºÇüÀº $\sharp$25ÆÄÀÏ Å©±â±îÁö ½ÃÇàÇÏ¿´´Ù. ±Ù°ü ¼ºÇü Àü$\cdot$ ÈÄ À̹ÌÁö¸¦ ½ºÄ³³Ê¸¦ ÀÌ¿ëÇÏ¿© ¾ò°í Photoshop 7.0ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿© ÁßøÇÏ¿´´Ù. À̹ÌÁö ºÐ¼® ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿© Ä¡±Ù´Ü ÂÊ¿¡¼­ºÎÅÍ 1, 2, 3, 4, 5, 6, 7, 8, 9¹× 10mmºÎÀ§ÀÇ ³»$\cdot$¿ÜÃø Æø°æ º¯È­¿Í ÃÑÆø°æ ¹× ±Ù°üÀÇ Áß½ÉÃà¿¡ ´ëÇÑ ±Ù°ü º¯À§À» ÃøÁ¤ÇÏ¿´´Ù. °¢ ºÎÀ§¿¡¼­ ³» ¿ÜÃø Æø°æ°ú ÃÑÆø°æ ¹× ±Ù°ü º¯À§ÀÇ À¯ÀǼº °ËÁ¤À» À§ÇØ one-way ANOVAºÐ¼®À» ½ÃÇàÇÏ¿´À¸¸ç °¢ ±â±¸°£ÀÇ À¯ÀǼº °ËÁ¤Àº Scheffe¡¯¡¯s test·Î »çÈÄ ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ ±â±¸ÀÇ º¯Çü°ú ÆÄÀý ¿©ºÎ¸¦ Æò°¡ÇÑ °á°ú ¿£Áø ±¸µ¿Çü ´ÏÄÌ-ŸÀÌŸ´½ ÆÄÀÏÀÎ ProFile°ú ProTaper¸¦ »ç¿ëÇÏ¿© ±Ù°ü¼ºÇü½Ã ¼öµ¿Çü ½ºÅ×Àη¹½º ½ºÆ¿ ÆÄÀÏÀÎ K-Flexofile¿¡ ºñÇØ ±Ù°üÀÇ º¯À§¸¦ Àû°Ô À¯¹ßÇÏ°í ƯÈ÷ ProFileÀÌ ±Ù°ü ¼ºÇü½Ã ¹Ù¶÷Á÷ÇÑ ±â±¸ÀÓÀ» ½Ã»çÇÏ¿´´Ù.

The purpose of this study was to evaluate the canal configuration after shaping by ProFile. ProTaper and K-Flexofile in simulated resin canals with different angles of curvature. Three types of instruments were used: ProFile. ProTaper. K-Flexofile. Simulated root canals. which were made of epoxy resin. were prepared by ProFile. ProTaper with rotary instrument using a crown-down pressureless technique. and hand instrumentation was performed by K-Flexofile using a step-back technique. All simulated. canals were prepared up to size 25 file at end-point of preparation. Pre and post instrumentation images were recorded with Scanner. Assessment of canal shape was completed with Image Analysis program. Measurements were made at 1. 2. 3. 4. 5. 6. 7. 8. 9 and 10mm from the apex. At each level. outer canal width. inner canal width. total canal width. and amount of transportation from original axis were recorded. Instrument deformation and fracture were recorded. Data were analyzed by means of one-way ANOVA analysis of variance and the Sheffe¡¯¡¯s test. The result was that ProFile and ProTaper maintain original canal shape regardless of the increase of angle of curvature than K-Flexofile. ProFile show significantly less canal transportation and maintained original canal shape better than ProTaper.

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