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IN VITRO EVALUATION OF THE CONSISTENCY OF TWO ELECTRONIC APEX LOCATORS

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Ȳ±Ô¿ë, ³ëº´´ö, ±èÀǼº, À̽ÂÁ¾,
¼Ò¼Ó »ó¼¼Á¤º¸
Ȳ±Ô¿ë ( Hawng Gyu-Young ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç
³ëº´´ö ( Roh Byoung-Duck ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç
±èÀǼº ( Kim Eui-Seong ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç
À̽ÂÁ¾ ( Lee Seung-Jong ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç

Abstract

Á¤È®ÇÑ ±Ù°üÀå ÃøÁ¤Àº ¼º°øÀûÀÎ ±Ù°üÄ¡·á¸¦ À§ÇØ ÇʼöÀûÀÌ´Ù. Kuttler´Â ±Ù°üÇùÂøºÎ´Â ÁÖ±Ù´Ü°ø¿¡¼­ 0.5 mm »ó¹æ¿¡ À§Ä¡ÇÑ´Ù°í ÇÏ¿´°í Lee´Â »ó¾Æ¹é¾ÇÁú °æ°èÁ¡ºÎÀ§º¸´Ù ÁÖ±Ù´Ü°øÀÌ ÀçÇö¼ºÀÌ ³ô°í ÀÓ»óÀûÀ¸·Î °üÂûÇϱ⠿ëÀÌÇÏ´Ù°í º¸°íÇÏ¿´´Ù. º» ¿¬±¸´Â alginate model»ó¿¡¼­ 2°³ÀÇ ÀüÀÚ±Ù°üÀåÃøÁ¤±â¸¦ »ç¿ëÇÏ¿© ¾òÀº ÃøÁ¤Ä¡ÀÇ Á¤È®¼º(accuracy)À» Æò°¡ÇÏ°í °¢°¢ 0.5 mark¿Í Apex mark Áß¿¡¼­ ¾î´À ÁöÁ¡¿¡¼­ ´õ ÀÏ°ü¼º(consistency)À» º¸ÀÌ´ÂÁö¸¦ ºñ±³ÇÏ°í ¶ÇÇÑ ±Ù°üÀåÀ» ÃøÁ¤ÇÒ ¶§ ÆÄÀÏÀ» ÀüÁø½ÃÅ°¸é¼­ Apex mark¸¦ ÃøÁ¤ÇÑ °ª°ú Ä¡±Ù´ÜºÎÀ§¸¦ Áö³ªÄ£ ÈÄ ´Ù½Ã ÈÄÅðÇϸ鼭 ÃøÁ¤ÇÑ °ªÀÇ Â÷À̸¦ ºñ±³ÇÏ°íÀÚ ÇÏ¿´´Ù.
52°³ÀÇ ¹ß°ÅµÈ °ÇÀüÇÑ Á¦ 1, 2¼Ò±¸Ä¡¸¦ ´ë»óÀ¸·Î ÇÏ¿´À¸¸ç Root ZX¿Í E-Magic Finder Deluxe¸¦ ÀÌ¿ëÇÏ¿© °¢°¢ 26°³Áß 13°³´Â ÆÄÀÏÀ» ÀüÁøÇϸ鼭 0.5 mark¿¡¼­ ±Ù°üÀåÀ» ÃøÁ¤ÇÏ°í Apex mark¿¡¼­ ±Ù°üÀåÀ» ÃøÁ¤ÇÑ ÈÄ 0.5 mark¿¡¼­ °íÁ¤ÇÏ¿´´Ù. ³ª¸ÓÁö 13°³´Â 0.5 mark¿¡¼­ ±Ù°üÀåÀ» ÃøÁ¤ÇÑ ÈÄ Apex mark¿¡¼­ ±Ù°üÀåÀ» ÃøÁ¤ÇÏ°í ´Ù½Ã Ä¡±Ù´Ü ºÎÀ§¸¦ ³Ñ¾î¼± ÈÄ ÈÄÅðÇϸ鼭 Apex mark¿¡¼­ ±Ù°üÀåÀ» ÃøÁ¤ÇÏ°í °íÁ¤ÇÑ ÈÄ Ä¡±Ù´ÜºÎ 4 mm¸¦ »èÁ¦ÇÏ¿© Çö¹Ì°æ»ó¿¡¼­ ÆÄÀÏ ³¡ºÎÅÍ ÁÖ±Ù´Ü°ø±îÁöÀÇ °Å¸®¸¦ ÃøÁ¤ÇÏ¿´´Ù.
±× °á°ú Root ZX¿Í E-Magic Finder ¸ðµÎ, ½ÇÇ豺 100%¿¡¼­ ÁÖ±Ù´Ü°ø°ú file tip°£ÀÇ °Å¸®°¡ ÀÓ»óÀû Çã¿ë¹üÀ§ÀÎ {pm}0.5;mm³»¿¡ ÀÖ¾úÀ¸¸ç 0.5 markº¸´Ù Apex mark¿¡¼­ ´õ ³ôÀº ÀÏ°ü¼ºÀ» º¸¿´´Ù. ÁÖ±Ù´Ü°ø¿¡¼­ fie tip»çÀÌÀÇ °Å¸®´Â Root ZXÀÇ 0.5 mark¿¡¼­ -0.18 mm, Apex mark¿¡¼­ -0.07 mmÀÌ°í E-Magic FinderÀÇ 0.5 mark¿¡¼­ -0.25 mm, Apex mark¿¡¼­ -0.02 mm¸¦ ³ªÅ¸³»¾ú´Ù. Apex hand´Â 0.04 mm¿´´Ù. µû¶ó¼­ Alginate modelÀ» »ç¿ëÇÑ º» ½ÇÇèÁ¶°Ç¿¡¼­´Â Apex mark¿¡¼­ ±Ù°üÀåÀ» ÃøÁ¤ÇÑ °á°ú °ÅÀÇ ÁÖ±Ù´Ü°ø°ú ÀÏÄ¡ÇÏ°í ´Ù¸¥ ¿©·¯ ¿¬±¸¿¡¼­ ÁÖ±Ù´Ü°ø¿¡¼­ 0.5 mm»ó¹æ¿¡ ±Ù°üÇùÂøºÎ°¡ À§Ä¡ÇÑ´Ù°í º¸°íÇÏ¿´À¸¹Ç·Î ÀÓ»óÀûÀÎ Ãø¸é¿¡¼­ Apex mark¿¡¼­ ÃøÁ¤ÇÑ ±Ù°üÀå¿¡¼­ 0.5 mm¸¦ »©¼­ ±Ù°üÀåÀ¸·Î »ç¿ëÇÏ´Â °ÍÀÌ ÀÓ»óÀûÀ¸·Î ´õ ÁÁÀ¸¸®¶ó°í »ç·áµÈ´Ù.

The purpose of this study was to evaluate the consistency of two electronic apex locators in vitro model.
Materials consisted of fifty two extracted premolars and two electronic apex locators; Root ZX (J. Morita, Osaka, Japan) and E-Magic Finder Deluxe (S-Denti. Cheonan, Korea). After access preparation, the teeth were embedded in a saline-mixed alginate model. Canal lengths of each tooth were measured at "0.5" and "Apex" mark of the apex locators, respectively so that each tooth had two measurements from 0.5 and Apex points. The file was fixed at final measurement using a glass ionomer cement. The apical 4 mm from the apex was exposed to measure the distance from the file tip to the major apical foramen of each tooth. Average distances and standard deviations were used to evaluate the consistency. Results showed that all measurements of both Root ZX and E-Magic Finder located the major foramen the range of {pm}0.5;mm level. Both apex locators showed better consistency at Apex mark than at 0.5 mark. The average distance of file tip-major foramen was - 0.18 mm at 0.5 mark and - 0.07 mm at Apex mark in Root ZX, - 0.25 mm at 0.5 mark and - 0.02 mm at Apex mark in E-Magic Finder. Standard deviation was 0.21 at 0.5 mark and 0.12 at Apex mark in Root ZX, 0.12 at 0.5 mark and 0.09 at Apex mark in E-Magic Finder.

Å°¿öµå

ÀüÀÚ±Ù°üÀåÃøÁ¤±â;ÀÏ°ü¼º;¾ËÁö³×ÀÌÆ® ¸ðµ¨;ÁÖ±Ù´Ü°ø;±Ù°üÇùÂøºÎ
Alginate model;apical constriction;consistency;electronic apex locator;major foramen

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