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¸¸°îµÈ ±Ù°ü ¼ºÇü½Ã ½ºÅ×Àη¹½º °­ ÆÄÀÏ°ú ´ÏÄÌ Æ¼Å¸´½ ÆÄÀÏÀÇ anticurvature filing ¿µÇâ

EFFECTS OF ANTICURVATURE FILING ON DANGER ZONE WIDTH IN CURVED ROOT CANALS

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±èÀǼº ( Kim Eui-Seong ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç
±èÇöÁ¤ ( Kim Hyun-Jung ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç
¼­´ö±Ô ( Seo Deog-Gyu ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Á¸Çб³½Ç
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Abstract

º» ½ÇÇèÀº ¹ß°Å µÈ ÇÏ¾Ç ´ë±¸Ä¡ÀÇ ±Ù½É ±Ù°üÀ» ½ºÅ×Àη¹½º °­ K ÆÄÀÏ°ú ´ÏÄÌ Æ¼Å¸´½ Àüµ¿½Ä ÆÄÀÏ·Î ±Ù°ü ¼ºÇüÇßÀ» ¶§ anticurvature filing ¹æ¹ýÀÇ È¿¿ë¼ºÀ» Æò°¡ÇÏ°íÀÚ Çß´Ù. 30°³ÀÇ ¹ß°ÅµÈ ÇÏ¾Ç ´ë±¸Ä¡ 60°³ÀÇ ±Ù½É±Ù°üÀ» ¼ºÇü ¹æ¹ý°ú ±â±¸¿¡ µû¶ó 3°³ÀÇ ±ºÀ¸·Î ³ª´©°í ±Ù´ÜºÎ ±Ù°üÀ» 30¹ø Å©±â·Î ÀÏÁ¤ÇÏ°Ô È®´ëÇÏ¿´´Ù. 1±ºÀº ½ºÅ×Àη¹½º °­ K ÆÄÀÏÀ» »ç¿ëÇØ circumferential filing techniqueÀ», 2±ºÀº ½ºÅ×Àη¹½º °­ K ÆÄÀÏÀ» »ç¿ëÇØ anticurvature filing techniqueÀ» 3±ºÀº ´ÏÄÌ Æ¼Å¸´½ ProFile 06 series¸¦ »ç¿ëÇØ anticurvature filing techniqueÀ¸·Î ±Ù°üÀ» ¼ºÇüÇÏ¿´´Ù. MCT¸¦ ÀÌ¿ëÇØ ¾òÀº ¼úÀü, ¼úÈÄ Àý´Ü¸é »óÀ» ÁßøÇØ Ä¡±Ù´Ü °ø¿¡¼­ 1mm ¶³¾îÁø ÁöÁ¡¿¡¼­ºÎÅÍ 0.5mm °£°ÝÀ¸·Î À§ÇèºÎÀ§ (danger zone)ÀÇ »èÁ¦·®À» ºñ±³ÇÏ¿´´Ù. micro-computed tomography system (skyscan-1076, SKYSCAN, Antwerpen, Belgium)À» ÀÌ¿ëÇØ ¾òÀº ¼úÀü ¼úÈÄ Àý´Ü¸é »óÀ» ÁßøÇØ Ä¡±Ù´Ü °ø¿¡¼­ 1mm¶³¾îÁø ÁöÁ¡¿¡¼­ºÎÅÍ 0.5mm °£°ÝÀ¸·Î À§ÇèºÎÀ§ (danger zone)ÀÇ »èÁ¦·®À» ºñ±³ÇÏ¿´´Ù. danger Bone Æø°æÀÇ º¯È­·®Àº one-way ANOVA¸¦ ÀÌ¿ëÇÏ¿© À¯ÀǼº °ËÁ¤À» ÇÏ¿´°í Tukey test¸¦ ÀÌ¿ëÇÏ¿© »çÈÄ°ËÁ¤ ÇÏ¿´´Ù. ±× °á°ú, ½ºÅ×Àη¹½º °­ ÆÄÀÏÀ» »ç¿ëÇÑ °æ¿ì circumferential filingÀ¸·Î ±Ù°ü ¼ºÇüÇÑ °Íº¸´Ù, anticurvature filingÀ¸·Î ±Ù°ü ¼ºÇüÇÑ °æ¿ì°¡ Ä¡°üºÎ 1/3ºÎÀ§()ÀÇ danger zoneÀÇ »èÁ¦·®ÀÌ À¯ÀǼº ÀÖ°Ô Àû¾ú°í (P<0.05), ´ÏÄÌ Æ¼Å¸´½À» »ç¿ëÇÏ¿© anticurvature filingÀ¸·Î ±Ù°ü ¼ºÇüÇÑ °æ¿ì´Â danger zoneÀÇ Áß°£ 1/3ºÎÀ§ ()ÀÇ »èÁ¦·®ÀÌ À¯ÀǼº ÀÖ°Ô Àû¾ú´Ù (P<0.05). ´ÏÄÌƼŸ´½À» »ç¿ëÇÏ¿© anticurvature filingÀ¸·Î ±Ù°ü ¼ºÇüÇÑ °æ¿ì, ½ºÅ×Àη¹½º °­ ÆÄÀÏÀ» »ç¿ëÇÏ¿© anticurvature filingÀ¸·Î ±Ù°ü ¼ºÇüÇÑ °æ¿ìº¸´Ù ÀÇ »èÁ¦·®ÀÌ À¯ÀǼº ÀÖ°Ô Àû¾ú´Ù (P<0.05).

The aim of this study was to compare the effects of anti curvature filing with stainless steel k-file versus nickel-titanium ProFile in the shaping of mesial root canals of extracted mandibular molars. A total of 60 canals from 30 mesial roots of mandibular molar teeth were randomly assigned to three groups with n=20 each. They were prepared with different instruments and methods: The first group with stainless steel k-file and circumferential filing. the second with precurved stainless steel k-file and anticurvature filing and the third with ProFile C06 taper) and anticurvature filing. Using a micro-computed tomography system (skyscan-1076, SKYSCAN, Antwerpen, Belgium), pre-and post-operative specimens were scanned. Subsequently, canal images were superimposed and changes in root dentin thickness were measured at distal side (danger zone) of the canal. The data was analyzed using a one-way ANOVA and the comparison of means was conducted using a post hoc multiple comparison Tukey test. There were significant differences in the change of root dentin thickness at the level between group 1 and 2, level between group 1 and 3 and level between group 2 and 3(n=20, P<0.05).

Å°¿öµå

anticurvature filing;stainless steel k-file;nickel-titanium ProFile

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